Optical imaging system having seven lenses of various refractive powers

ABSTRACT

An optical imaging system a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5&lt;L1234TRavg/L7TR&lt;0.9, where L1234TRavg is an average value of overall outer diameters of the first to fourth lenses, L7TR is an overall outer diameter of the seventh lens, and L1234TRavg and L7TR are expressed in a same unit of measurement.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 USC 119(a) of Korean PatentApplication Nos. 10-2018-0061396 filed on May 29, 2018, and10-2018-0106187 filed on Sep. 5, 2018, in the Korean IntellectualProperty Office, the entire disclosures of which are incorporated hereinby reference in its entirety.

BACKGROUND 1. Field

This application relates to an optical imaging system including sevenlenses.

2. Description of Related Art

A mobile terminal is commonly provided with a camera for videocommunications or capturing images. However, it is difficult to achievehigh performance in such a camera for a mobile terminal due to spacelimitations inside the mobile terminal.

Accordingly, a demand for an optical imaging system capable of improvingthe performance of the camera module increasing a size of the camera hasincreased as a number of mobile terminals provided with a camera hasincreased.

SUMMARY

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used as an aid in determining the scope of the claimed subjectmatter.

In one general aspect, an optical imaging system includes a first lens,a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens,and a seventh lens sequentially disposed in numerical order along anoptical axis of the optical imaging system from an object side of theoptical imaging system toward an imaging plane of the optical imagingsystem, wherein the optical imaging system satisfies0.5<L1234TRavg/L7TR<0.9, where L1234TRavg is an average value of overallouter diameters of the first to fourth lenses, L7TR is an overall outerdiameter of the seventh lens, and L1234TRavg and L7TR are expressed in asame unit of measurement.

An object-side surface of the first lens may be convex.

An image-side surface of the first lens may be concave.

An image-side surface of the seventh lens may be concave.

A distance along the optical axis from an object-side surface of thefirst lens to the imaging plane may be 6 mm or less.

At least one inflection point may be formed on either one or both of anobject-side surface and an image-side surface of the sixth lens.

At least one inflection point may be formed on either one or both of anobject-side surface and an image-side surface of the seventh lens.

The optical imaging system may further satisfy 0.1<L1w/L7w<0.3, whereL1w is a weight of the first lens, L7w is a weight of the seventh lens,and L1w and L7w are expressed in a same unit of measurement.

The optical imaging system may further include a spacer disposed betweenthe sixth and seventh lenses, and the optical imaging system may furthersatisfy 0.5<S6d/f<1.2, where S6d is an inner diameter of the spacer, fis the overall focal length of the optical imaging system, and S6d and fare expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.4<L1TR/L7TR<0.7, whereL1TR is an overall outer diameter of the first lens, and L1TR and L7TRare expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.5<L1234TRavg/L7TR<0.75.

The optical imaging system may further satisfy0.5<L12345TRavg/L7TR<0.76, where L12345TRavg is an average value ofoverall outer diameters of the first to fifth lenses, and L12345TRavgand L7TR are expressed in a same unit of measurement.

The second lens may have a positive refractive power.

The third lens may have a positive refractive power.

The fifth lens may have a negative refractive power.

A paraxial region of an object-side surface of the fifth lens may beconcave or convex.

A paraxial region of an image-side surface of the fifth lens may beconcave or convex.

A paraxial region of an object-side surface of the sixth lens may beconcave or convex.

A paraxial region of an image-side surface of the sixth lens may beconcave or convex.

A paraxial region of an object-side surface of the seventh lens may beconcave or convex.

Other features and aspects will be apparent from the following detaileddescription, the drawings, and the claims.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a view illustrating a first example of an optical imagingsystem.

FIG. 2 illustrates aberration curves of the optical imaging system ofFIG. 1 .

FIG. 3 is a view illustrating a second example of an optical imagingsystem.

FIG. 4 illustrates aberration curves of the optical imaging system ofFIG. 3 .

FIG. 5 is a view illustrating a third example of an optical imagingsystem.

FIG. 6 illustrates aberration curves of the optical imaging system ofFIG. 5 .

FIG. 7 is a view illustrating a fourth example of an optical imagingsystem.

FIG. 8 illustrates aberration curves of the optical imaging system ofFIG. 7 .

FIG. 9 is a view illustrating a fifth example of an optical imagingsystem.

FIG. 10 illustrates aberration curves of the optical imaging system ofFIG. 9 .

FIG. 11 is a view illustrating a sixth example of an optical imagingsystem.

FIG. 12 illustrates aberration curves of the optical imaging system ofFIG. 11 .

FIG. 13 is a view illustrating a seventh example of an optical imagingsystem.

FIG. 14 illustrates aberration curves of the optical imaging system ofFIG. 13 .

FIG. 15 is a view illustrating an eighth example of an optical imagingsystem.

FIG. 16 illustrates aberration curves of the optical imaging system ofFIG. 15 .

FIG. 17 is a view illustrating a ninth example of an optical imagingsystem.

FIG. 18 illustrates aberration curves of the optical imaging system ofFIG. 17 .

FIG. 19 is a view illustrating a tenth example of an optical imagingsystem.

FIG. 20 illustrates aberration curves of the optical imaging system ofFIG. 19 .

FIG. 21 is a view illustrating an eleventh example of an optical imagingsystem.

FIG. 22 illustrates aberration curves of the optical imaging system ofFIG. 21 .

FIG. 23 is a view illustrating a twelfth example of an optical imagingsystem.

FIG. 24 illustrates aberration curves of the optical imaging system ofFIG. 23 .

FIG. 25 is a view illustrating a thirteenth example of an opticalimaging system.

FIG. 26 illustrates aberration curves of the optical imaging system ofFIG. 25 .

FIG. 27 is a view illustrating a fourteenth example of an opticalimaging system.

FIG. 28 illustrates aberration curves of the optical imaging system ofFIG. 27 .

FIG. 29 is a view illustrating a fifteenth example of an optical imagingsystem.

FIG. 30 illustrates aberration curves of the optical imaging system ofFIG. 29 .

FIG. 31 is a view illustrating a sixteenth example of an optical imagingsystem.

FIG. 32 illustrates aberration curves of the optical imaging system ofFIG. 31 .

FIG. 33 is a view illustrating a seventeenth example of an opticalimaging system.

FIG. 34 illustrates aberration curves of the optical imaging system ofFIG. 33 .

FIG. 35 is a view illustrating an eighteenth example of an opticalimaging system.

FIG. 36 illustrates aberration curves of the optical imaging system ofFIG. 35 .

FIG. 37 is a view illustrating a nineteenth example of an opticalimaging system.

FIG. 38 illustrates aberration curves of the optical imaging system ofFIG. 37 .

FIG. 39 is a view illustrating a twentieth example of an optical imagingsystem.

FIG. 40 illustrates aberration curves of the optical imaging system ofFIG. 39 .

FIG. 41 is a view illustrating a twenty-first example of an opticalimaging system.

FIG. 42 illustrates aberration curves of the optical imaging system ofFIG. 41 .

FIG. 43 is a view illustrating a twenty-second example of an opticalimaging system.

FIG. 44 illustrates aberration curves of the optical imaging system ofFIG. 43 .

FIG. 45 is a view illustrating a twenty-third example of an opticalimaging system.

FIG. 46 illustrates aberration curves of the optical imaging system ofFIG. 45 .

FIG. 47 is a view illustrating a twenty-fourth example of an opticalimaging system.

FIG. 48 illustrates aberration curves of the optical imaging system ofFIG. 47 .

FIG. 49 is a view illustrating a twenty-fifth example of an opticalimaging system.

FIG. 50 illustrates aberration curves of the optical imaging system ofFIG. 49 .

FIG. 51 is a view illustrating a twenty-sixth example of an opticalimaging system.

FIG. 52 illustrates aberration curves of the optical imaging system ofFIG. 51 .

FIG. 53 is a view illustrating a twenty-seventh example of an opticalimaging system.

FIG. 54 illustrates aberration curves of the optical imaging system ofFIG. 53 .

FIG. 55 is a view illustrating a twenty-eighth example of an opticalimaging system.

FIG. 56 illustrates aberration curves of the optical imaging system ofFIG. 55 .

FIG. 57 is a view illustrating a twenty-ninth example of an opticalimaging system.

FIG. 58 illustrates aberration curves of the optical imaging system ofFIG. 57 .

FIGS. 59 and 60 are cross-sectional views illustrating examples of anoptical imaging system and a lens barrel coupled to each other.

FIG. 61 is cross-sectional view illustrating an example of a seventhlens.

FIG. 62 is a cross-sectional view illustrating an example of a shape ofa rib of a lens.

Throughout the drawings and the detailed description, the same referencenumerals refer to the same elements. The drawings may not be to scale,and the relative size, proportions, and depiction of elements in thedrawings may be exaggerated for clarity, illustration, and convenience.

DETAILED DESCRIPTION

The following detailed description is provided to assist the reader ingaining a comprehensive understanding of the methods, apparatuses,and/or systems described herein. However, various changes,modifications, and equivalents of the methods, apparatuses, and/orsystems described herein will be apparent after an understanding of thedisclosure of this application. For example, the sequences of operationsdescribed herein are merely examples, and are not limited to those setforth herein, but may be changed as will be apparent after anunderstanding of the disclosure of this application, with the exceptionof operations necessarily occurring in a certain order. Also,descriptions of features that are known in the art may be omitted forincreased clarity and conciseness.

The features described herein may be embodied in different forms, andare not to be construed as being limited to the examples describedherein. Rather, the examples described herein have been provided merelyto illustrate some of the many possible ways of implementing themethods, apparatuses, and/or systems described herein that will beapparent after an understanding of the disclosure of this application.

Throughout the specification, when an element, such as a layer, region,or substrate, is described as being “on,” “connected to,” or “coupledto” another element, it may be directly “on,” “connected to,” or“coupled to” the other element, or there may be one or more otherelements intervening therebetween. In contrast, when an element isdescribed as being “directly on,” “directly connected to,” or “directlycoupled to” another element, there can be no other elements interveningtherebetween.

As used herein, the term “and/or” includes any one and any combinationof any two or more of the associated listed items.

Although terms such as “first,” “second,” and “third” may be used hereinto describe various members, components, regions, layers, or sections,these members, components, regions, layers, or sections are not to belimited by these terms. Rather, these terms are only used to distinguishone member, component, region, layer, or section from another member,component, region, layer, or section. Thus, a first member, component,region, layer, or section referred to in examples described herein mayalso be referred to as a second member, component, region, layer, orsection without departing from the teachings of the examples.

Spatially relative terms such as “above,” “upper,” “below,” and “lower”may be used herein for ease of description to describe one element'srelationship to another element as shown in the figures. Such spatiallyrelative terms are intended to encompass different orientations of thedevice in use or operation in addition to the orientation depicted inthe figures. For example, if the device in the figures is turned over,an element described as being “above” or “upper” relative to anotherelement will then be “below” or “lower” relative to the other element.Thus, the term “above” encompasses both the above and below orientationsdepending on the spatial orientation of the device. The device may alsobe oriented in other ways (for example, rotated by 90 degrees or atother orientations), and the spatially relative terms used herein are tobe interpreted accordingly.

The terminology used herein is for describing various examples only, andis not to be used to limit the disclosure. The articles “a,” “an,” and“the” are intended to include the plural forms as well, unless thecontext clearly indicates otherwise. The terms “comprises,” “includes,”and “has” specify the presence of stated features, numbers, operations,members, elements, and/or combinations thereof, but do not preclude thepresence or addition of one or more other features, numbers, operations,members, elements, and/or combinations thereof.

Thicknesses, sizes, and shapes of lenses illustrated in the drawings mayhave been slightly exaggerated for convenience of explanation. Inaddition, the shapes of spherical surfaces or aspherical surfaces of thelenses described in the detailed description and illustrated in thedrawings are merely examples. That is, the shapes of the sphericalsurfaces or the aspherical surfaces of the lenses are not limited to theexamples described herein.

Numerical values of radii of curvature, thicknesses of lenses, distancesbetween elements including lenses or surfaces, effective aperture radiiof lenses, focal lengths, and diameters, thicknesses, and lengths ofvarious elements are expressed in millimeters (mm), and angles areexpressed in degrees. Thicknesses of lenses and distances betweenelements including lenses or surfaces are measured along the opticalaxis of the optical imaging system.

The term “effective aperture radius” as used in this application refersto a radius of a portion of a surface of a lens or other element (anobject-side surface or an image-side surface of a lens or other element)through which light actually passes. The effective aperture radius isequal to a distance measured perpendicular to an optical axis of thesurface between the optical axis of the surface and the outermost pointon the surface through which light actually passes. Therefore, theeffective aperture radius may be equal to a radius of an optical portionof a surface, or may be smaller than the radius of the optical portionof the surface if light does not pass through a peripheral portion ofthe optical portion of the surface. The object-side surface and theimage-side surface of a lens or other element may have differenteffective aperture radii.

In this application, unless stated otherwise, a reference to the shapeof a lens surface means the shape of a paraxial region of the lenssurface. A paraxial region of a lens surface is a central portion of thelens surface surrounding the optical axis of the lens surface in whichlight rays incident to the lens surface make a small angle θ to theoptical axis and the approximations sin θ≈θ, tan θ≈θ, and cos θ≈1 arevalid.

For example, a statement that the object-side surface of a lens isconvex means that at least a paraxial region of the object-side surfaceof the lens is convex, and a statement that the image-side surface ofthe lens is concave means that at least a paraxial region of theimage-side surface of the lens is concave. Therefore, even though theobject side-surface of the lens may be described as being convex, theentire object-side surface of the lens may not be convex, and aperipheral region of the object-side surface of the lens may be concave.Also, even though the image-side surface of the lens may be described asbeing concave, the entire image-side surface of the lens may not beconcave, and a peripheral region of the image-side surface of the lensmay be convex.

An optical imaging system includes a plurality of lenses. For example,the optical imaging system includes a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens, and a seventh lenssequentially disposed in numerical order along an optical axis of theoptical imaging system from an object side of the optical imaging systemtoward an imaging plane of the optical imaging system. Thus, the firstlens is a lens closest to an object (or a subject) to be imaged by theoptical imaging system, while the seventh lens is a lens closest to theimaging plane.

Each lens of the optical imaging system includes an optical portion anda rib. The optical portion of the lens is a portion of the lens that isconfigured to refract light, and is generally formed in a centralportion of the lens. The rib of the lens is an edge portion of the lensthat enables the lens to be mounted in a lens barrel and the opticalaxis of the lens to be aligned with the optical axis of the opticalimaging system. The rib of the lens extends radially outward from theoptical portion. The optical portions of the lenses are generally not incontact with each other. For example, the first to seventh lenses aremounted in the lens barrel so that they are spaced apart from oneanother by predetermined distances along the optical axis of the opticalimaging system. The ribs of the lenses may be in selective contact witheach other. For example, the ribs of the first to fourth lenses, or thefirst fifth lenses, or the second to fourth lenses, may be in contactwith each other so that the optical axes of these lenses may be easilyaligned with the optical axis of the optical imaging system.

Next, a configuration of the optical imaging system will be described.

The optical imaging system includes a plurality of lenses. For example,the optical imaging system includes a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens, and a seventh lenssequentially disposed in numerical order along an optical axis of theoptical imaging system from an object side of the optical imaging systemtoward an imaging plane of the optical imaging system.

The optical imaging system further includes an image sensor and afilter. The image sensor forms an imaging plane, and converts lightrefracted by the first to seventh lenses into an electric signal. Thefilter is disposed between the seventh lens and the imaging plane, andblocks infrared rays in the light refracted by the first to seventhlenses from being incident on the imaging plane.

The optical imaging system further includes a stop and spacers. The stopmay be disposed in front of the first lens, or at a position of eitheran object-side surface or an image side-surface of one of the first toseventh lenses, or between two adjacent lenses of the first to seventhlenses, or between the object-side surface and the image-side surface ofone of the first to seventh lenses, to adjust the amount of lightincident on the imaging plane. Some examples may include two stops, oneof which may be disposed in front of the first lens, or at the positionof the object-side surface of the first lens, or between the object-sidesurface and the image-side surface of the first lens. Each of thespacers is disposed at a respective position between two lenses of thefirst to seventh lenses to maintain a predetermined distance between thetwo lenses. In addition, the spacers may be made of a light-shieldingmaterial to block extraneous light penetrating into the ribs of thelenses. There may be six or seven spacers. For example, a first spaceris disposed between the first lens and the second lens, a second spaceris disposed between the second lens and the third lens, a third spaceris disposed between the third lens and the fourth lens, a fourth spaceris disposed between the fourth lens and the fifth lens, a fifth spaceris disposed between the fifth lens and the sixth lens, and a sixthspacer is disposed between the sixth lens and the seventh lens. Inaddition, the optical imaging system may further include a seventhspacer disposed between the sixth lens and the sixth spacer.

Next, the lenses of the optical imaging system will be described.

The first lens has a refractive power. For example, the first lens has apositive refractive power or a negative refractive power. One surface ofthe first lens may be convex. For example, an object-side surface of thefirst lens may be convex. One surface of the first lens may be concave.For example, an image-side surface of the first lens may be concave. Thefirst lens may have an aspherical surface. For example, one surface orboth surfaces of the first lens may be aspherical.

The second lens has a refractive power. For example, the second lens hasa positive refractive power or a negative refractive power. At least onesurface of the second lens may be convex. For example, an object-sidesurface of the second lens may be convex, or both the object-sidesurface and an image-side surface of the second lens may be convex. Atleast one surface of the second lens may be concave. For example, theimage-side surface of the second lens may be concave, or both theobject-side surface and the image-side surface of the second lens may beconcave. The second lens may have an aspherical surface. For example,one surface or both surfaces of the second lens may be aspherical.

The third lens has a refractive power. For example, the third lens has apositive refractive power or a negative refractive power. One surface ofthe third lens may be convex. For example, an object-side surface or animage-side surface of the third lens may be convex. One surface of thethird lens may be concave. For example, the object-side surface or theimage-side surface of the third lens may be concave. The third lens mayhave an aspherical surface. For example, one surface or both surfaces ofthe third lens may be aspherical.

The fourth lens has a refractive power. For example, the fourth lens hasa positive refractive power or a negative refractive power. At least onesurface of the fourth lens may be convex. For example, an object-sidesurface or an image-side surface of the fourth lens may be convex, orboth the object-side surface and the image-side surface of the fourthlens may be convex. One surface of the fourth lens may be concave. Forexample, the object-side surface or the image-side surface of the fourthlens may be concave. The fourth lens may have an aspherical surface. Forexample, one surface or both surfaces of the fourth lens may beaspherical.

The fifth lens has a refractive power. For example, the fifth lens has apositive refractive power or a negative refractive power. One surface ofthe fifth lens may be convex. For example, an object-side surface or animage-side surface of the fifth lens may be convex. One surface of thefifth lens may be concave. For example, the object-side surface or theimage-side surface of the fifth lens may be concave. The fifth lens mayhave an aspherical surface. For example, one surface or both surfaces ofthe fifth lens may be aspherical.

The sixth lens has a refractive power. For example, the sixth lens has apositive refractive power or a negative refractive power. At least onesurface of the sixth lens may be convex. For example, an object-sidesurface or an image side surface of the sixth lens may be convex, orboth the object-side surface and the image-side surface of the sixthlens may be convex. At least one surface of the sixth lens may beconcave. For example, the object-side surface or the image-side surfaceof the sixth lens may be concave, or both the object-side surface andthe image-side surface of the sixth lens may be concave. At least onesurface of the sixth lens may have at least one inflection point. Aninflection point is a point where a lens surface changes from convex toconcave, or from concave to convex. A number of inflection points iscounted from a center of the lens to an outer edge of the opticalportion of the lens. For example, at least one inflection point may beformed on either one or both of the object-side surface and theimage-side surface of the sixth lens. Therefore, at least one surface ofthe sixth lens may have a paraxial region and a peripheral region havingshapes that are different from each other. For example, a paraxialregion of the image-side surface of the sixth lens may be concave, but aperipheral portion thereof may be convex. The sixth lens may have anaspherical surface. For example, one surface or both surfaces of thesixth lens may be aspherical.

The seventh lens has a refractive power. For example, the seventh lenshas a positive refractive power or a negative refractive power. Onesurface of the seventh lens may be convex. For example, an object-sidesurface of the seventh lens may be convex. At least one surface of theseventh lens may be concave. For example, an image-side surface of theseventh lens may be concave, or both the object-side surface and theimage-side surface of the seventh lens may be concave. At least onesurface of the seventh lens may have at least one inflection point. Forexample, at least one inflection point may be formed on either one orboth of the object-side surface and the image-side surface of theseventh lens. Therefore, at least one surface of the seventh lens mayhave a paraxial region and a peripheral region having shapes that aredifferent from each other. For example, a paraxial region of theimage-side surface of the seventh lens may be concave, but a peripheralregion thereof may be convex. The seventh lens may have an asphericalsurface. For example, one surface or both surfaces of the seventh lensmay be aspherical.

The lenses of the optical imaging system may be made of a light materialhaving a high light transmittance. For example, the first to seventhlenses may be made of a plastic material. However, a material of thefirst to seventh lenses is not limited to the plastic material.

The aspherical surfaces of the first to seventh lenses may berepresented by the following Equation 1:

$\begin{matrix}{Z = {\frac{{cY}^{2}}{1 + \sqrt{1 - {\left( {1 + K} \right)c^{2}Y^{2}}}} + {AY}^{4} + {BY}^{6} + {CY}^{8} + {DY}^{10} + {EY}^{12} + {FY}^{14} + {GY}^{16} + {HY}^{18} + \ldots}} & (1)\end{matrix}$

In Equation 1, c is a curvature of a lens surface and is equal to aninverse of a radius of curvature of the lens surface at an optical axisof the lens surface, K is a conic constant, Y is a distance from acertain point on an aspherical surface of the lens to an optical axis ofthe lens in a direction perpendicular to the optical axis, A to H areaspherical constants, Z (or sag) is a distance between the certain pointon the aspherical surface of the lens at the distance Y to the opticalaxis and a tangential plane perpendicular to the optical axis meetingthe apex of the aspherical surface of the lens. Some of the examplesdisclosed in this application include an aspherical constant J. Anadditional term of JY²⁰ may be added to the right side of Equation 1 toreflect the effect of the aspherical constant J.

The optical imaging system may satisfy one or more of the followingConditional Expressions 1 to 5:0.1<L1w/L7w<0.4  (Conditional Expression 1)0.5<S6d/f<1.4  (Conditional Expression 2)0.4<L1TR/L7TR<0.8  (Conditional Expression 3)0.5<L1234TRavg/L7TR<0.9  (Conditional Expression 4)0.5<L12345TRavg/L7TR<0.9  (Conditional Expression 5)

In the above Conditional Expressions, L1w is a weight of the first lens,and L7w is a weight of the seventh lens.

S6d is an inner diameter of the sixth spacer, and f is an overall focallength of the optical imaging system.

L1TR is an overall outer diameter of the first lens, and L7TR is anoverall outer diameter of the seventh lens. The overall outer diameterof a lens is a diameter of the lens including both the optical portionof the lens and the rib of the lens.

L1234TRavg is an average value of overall outer diameters of the firstto fourth lenses, and L12345TRavg is an average value of overall outerdiameters of the first to fifth lenses.

Conditional Expressions 1 and 3 specify ranges of a weight ratio and anoverall outer diameter ratio between the first lens and the seventh lensto facilitate a self-alignment between the lenses and an alignment bythe lens barrel.

Conditional Expression 2 specifies a range of a ratio of the innerdiameter of the sixth spacer to the overall focal length of the opticalimaging system to minimize a flare phenomenon.

Conditional Expressions 4 and 5 specify overall outer diameter ratiosbetween the lenses to facilitate aberration correction.

The optical imaging system may also satisfy one or more of the followingConditional Expressions 6 to 10:0.1<L1w/L7w<0.3  (Conditional Expression 6)0.5<S6d/f<1.2  (Conditional Expression 7)0.4<L1TR/L7TR<0.7  (Conditional Expression 8)0.5<L1234TRavg/L7TR<0.75  (Conditional Expression 9)0.5<L12345TRavg/L7TR<0.76  (Conditional Expression 10)

Conditional Expressions 6 to 10 are the same as Conditional Expressions1 to 5, except that Conditional Expressions 6 to 10 specify narrowerranges.

The optical imaging system may also satisfy one or more of the followingConditional Expressions 11 to 31:0.01<R1/R4<1.3  (Conditional Expression 11)0.1<R1/R5<0.7  (Conditional Expression 12)0.05<R1/R6<0.9  (Conditional Expression 13)0.2<R1/R11<1.2  (Conditional Expression 14)0.8<R1/R14<1.2  (Conditional Expression 15)0.6<(R11+R14)/(2*R1)<3.0  (Conditional Expression 16)0.4<D13/D57<1.2  (Conditional Expression 17)0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8  (Conditional Expression18)0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0  (ConditionalExpression 19)0.2<TD1/D67<0.8  (Conditional Expression 20)0.1<(R11+R14)/(R5+R6)<1.0  (Conditional Expression 21)SD12<SD34  (Conditional Expression 22)SD56<SD67  (Conditional Expression 23)SD56<SD34  (Conditional Expression 24)0.6<TTL/(2*(IMG HT))<0.9  (Conditional Expression 25)0.2<ΣSD/ΣTD<0.7  (Conditional Expression 26)0<min(f1:f3)/max(f4:f7)<0.4  (Conditional Expression 27)0.4<(ΣTD)/TTL<0.7  (Conditional Expression 28)0.7<SL/TTL<1.0  (Conditional Expression 29)0.81<f12/f123<0.96  (Conditional Expression 30)0.6<f12/f1234<0.84  (Conditional Expression 31)

In the above Conditional Expressions, R1 is a radius of curvature of anobject-side surface of the first lens, R4 is a radius of curvature of animage-side surface of the second lens, R5 is a radius of curvature of anobject-side surface of the third lens, R6 is a radius of curvature of animage-side surface of the third lens, R11 is a radius of curvature of anobject-side surface of the sixth lens, and R14 is a radius of curvatureof an image-side surface of the seventh lens.

D13 is a distance along an optical axis of the optical imaging systemfrom the object-side surface of the first lens to the image-side surfaceof the third lens, and D57 is a distance along the optical axis from anobject-side surface of the fifth lens to the image-side surface of theseventh lens.

f1 is a focal length of the first lens, f2 is a focal length of thesecond lens, f3 is a focal length of the third lens, f4 is a focallength of the fourth lens, f5 is a focal length of the fifth lens, f6 isa focal length of the sixth lens, f7 is a focal length of the seventhlens, f is an overall focal length of the optical imaging system, andTTL is a distance along the optical axis from the object-side surface ofthe first lens to an imaging plane of an image sensor of the opticalimaging system.

TD1 is a thickness along the optical axis of the first lens, and D67 isa distance along the optical axis from the object-side surface of thesixth lens to the image-side surface of the seventh lens.

SD12 is a distance along the optical axis from an image-side surface ofthe first lens to an object-side surface of the second lens, SD34 is adistance along the optical axis from the image-side surface of the thirdlens to an object-side surface of the fourth lens, SD56 is a distancealong the optical axis from an image-side surface of the fifth lens tothe object-side surface of the sixth lens, and SD67 is a distance alongthe optical axis from an image-side surface of the sixth lens to anobject-side surface of the seventh lens.

IMG HT is one-half of a diagonal length of the imaging plane of theimage sensor.

ΣSD is a sum of air gaps along the optical axis between the first toseventh lenses, and ΣTD is a sum of thicknesses along the optical axisof the first to seventh lenses. An air gap is a distance along theoptical axis between adjacent ones of the first to seventh lenses.

min(f1:f3) is a minimum value of absolute values of the focal lengths ofthe first to third lenses, and max(f4:f7) is a maximum value of absolutevalues of the focal lengths of the fourth to seventh lenses.

SL is a distance along the optical axis from the stop to the imagingplane of the image sensor.

f12 is a composite focal length of the first and second lenses, f123 isa composite focal length of the first to third lenses, and f1234 is acomposite focal length of the first to fourth lenses.

Conditional Expression 11 specifies a design range of the second lensfor minimizing aberration caused by the first lens. For example, it isdifficult to expect a sufficient correction of longitudinal sphericalaberration for the second lens having a radius of curvature that exceedsthe upper limit value of Conditional Expression 11, and it is difficultto expect a sufficient correction of astigmatic field curves for thesecond lens having a radius of curvature that is below the lower limitvalue of Conditional Expression 11.

Conditional Expressions 12 and 13 specify a design range of the thirdlens for minimizing aberration caused by the first lens. For example, itis difficult to expect a sufficient correction of longitudinal sphericalaberration for the third lens having a radius of curvature that exceedsthe upper limit value of Conditional Expression 12 or 13, and it isdifficult to expect a sufficient correction of astigmatic field curvesfor the third lens having a radius of curvature that is below the lowerlimit value of Conditional Expression 12 or 13.

Conditional Expression 14 specifies a design range of the sixth lens forminimizing aberration caused by the first lens. For example, it isdifficult to expect a sufficient correction of longitudinal sphericalaberration for the sixth lens having a radius of curvature that exceedsthe upper limit value of Conditional Expression 14, and the sixth lenshaving a radius of curvature that is below the lower limit value ofConditional Expression 14 is apt to cause a flare phenomenon.

Conditional Expression 15 specifies a design range of the seventh lensfor minimizing the aberration caused by the first lens. For example, itis difficult to expect a sufficient correction of longitudinal sphericalaberration for the seventh lens having a radius of curvature thatexceeds the upper limit value of Conditional Expression 15, and theseventh lens having a radius of curvature that is below the lower limitvalue of Conditional Expression 15 is apt to cause an imaging planecurvature.

Conditional Expression 16 specifies a ratio of a sum of radii ofcurvature of the sixth lens and the seventh lens to twice a radius ofcurvature of the first lens for correcting the longitudinal sphericalaberration and achieving excellent optical performance.

Conditional Expression 17 specifies a ratio of the optical imagingsystem mountable in a compact terminal. For example, an optical imagingsystem having a ratio that exceeds the upper limit value of ConditionalExpression 17 may cause a problem that the total length of the opticalimaging system becomes long, and an optical imaging system having aratio that is below the lower limit value of Conditional Expression 17may cause a problem that a lateral cross-section of the optical imagingsystem becomes large.

Conditional Expressions 18 and 19 specify a refractive power ratio ofthe first to seventh lenses for facilitating mass production of theoptical imaging system. For example, an optical imaging system having arefractive power ratio that exceeds the upper limit value of ConditionalExpression 18 or 19 or is below the lower limit value of ConditionalExpression 18 or 19 is difficult to commercialize because the refractivepower of one or more of the first to seventh lenses is too great.

Conditional Expression 20 specifies a thickness range of the first lensfor implementing a compact optical imaging system. For example, thefirst lens having a thickness that exceeds the upper value ofConditional Expression 20 or is below the lower limit value ofConditional Expression 20 is too thick or too thin to be manufactured.

Conditional Expression 22 specifies a design condition of the first tofourth lenses for improving chromatic aberration. For example, a case inwhich a distance between the first lens and the second lens is shorterthan a distance between the third lens and the fourth lens isadvantageous for improving the chromatic aberration.

Conditional Expressions 25 to 28 specify design conditions forimplementing a compact optical imaging system. For example, lenses thatdeviate from the numerical range of Conditional Expression 26 or 28 aredifficult to form by injection molding and process.

Conditional Expressions 29 to 31 specify design conditions of theoptical imaging system in consideration of a position of the stop. Forexample, an optical imaging system that does not satisfy one or more ofConditional Expressions 29 to 31 may have a longer overall length due tothe refractive power of the lenses disposed behind the stop.

Next, various examples of the optical imaging system will be described.In the tables that appear in the following examples, S1 denotes theobject-side surface of the first lens, S2 denotes an image-side surfaceof the first lens, S3 denotes an object-side surface of a second lens,S4 denotes an image-side surface of the second lens, S5 denotes anobject-side surface of a third lens, S6 denotes an image-side surface ofthe third lens, S7 denotes an object-side surface of a fourth lens, S8denotes an image-side surface of the fourth lens, S9 denotes anobject-side surface of a fifth lens, S10 denotes an image-side surfaceof the fifth lens, S11 denotes an object-side surface of a sixth lens,S12 denotes an image-side surface of the sixth lens, S13 denotes anobject-side surface of a seventh lens, S14 denotes an image-side surfaceof the seventh lens, S15 denotes an object-side surface of a filter, S16denotes an image-side surface of the filter, and S17 denotes an imagingplane.

First Example

FIG. 1 is a view illustrating a first example of an optical imagingsystem, and FIG. 2 illustrates aberration curves of the optical imagingsystem of FIG. 1 .

An optical imaging system 1 includes a first lens 1001, a second lens2001, a third lens 3001, a fourth lens 4001, a fifth lens 5001, a sixthlens 6001, and a seventh lens 7001.

The first lens 1001 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2001 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3001 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4001 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5001 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6001 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6001. The seventh lens 7001 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7001.

The optical imaging system 1 further includes a stop, a filter 8001, andan image sensor 9001. The stop is disposed between the first lens 1001and the second lens 2001 to adjust an amount of light incident onto theimage sensor 9001. The filter 8001 is disposed between the seventh lens7001 and the image sensor 9001 to block infrared rays. The image sensor9001 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 1 , the stop is disposed at a distanceof 0.818 mm from the object-side surface of the first lens 1001 towardthe imaging plane of the optical imaging system 1. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 1 listed in Table 59 that appears later in this application.

Table 1 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 1 , and Table 2 below showsaspherical coefficients of the lenses of FIG. 1 .

TABLE 1 Index of Effective Surface Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.7727 0.8181 1.546 56.114 1.380 S2 Lens 7.4351 0.0796 1.328 (Stop) S3Second 5.0469 0.2000 1.669 20.353 1.249 S4 Lens 2.9477 0.3758 1.101 S5Third 12.3816 0.4066 1.546 56.114 1.126 S6 Lens 25.2119 0.1314 1.230 S7Fourth 5.6841 0.2190 1.669 20.353 1.248 S8 Lens 4.4062 0.1513 1.414 S9Fifth 27.7177 0.3054 1.644 23.516 1.474 S10 Lens 8.0565 0.2193 1.706 S11Sixth 4.7687 0.6347 1.546 56.114 1.930 S12 Lens −1.5557 0.3548 2.155 S13Seventh −2.2362 0.3735 1.546 56.114 2.750 S14 Lens 2.3510 0.1949 2.957S15 Filter Infinity 0.2100 1.519 64.197 3.305 S16 Infinity 0.6005 3.373S17 Imaging Infinity 0.0152 3.697 Plane

TABLE 2 K A B C D E F G H J S1 −1.0302 0.0182 0.0322 −0.072 0.1129−0.1074 0.0607 −0.0187 0.0023 0 S2 9.4302 −0.101 0.1415 −0.1169 0.03890.0135 −0.0204 0.0086 −0.0013 0 S3 0 0 0 0 0 0 0 0 0 0 S4 −0.5054 −0.1070.153 0.0098 −0.2968 0.4771 −0.3575 0.1295 −0.0146 0 S5 0 −0.0525 0.0235−0.1143 0.214 −0.2648 0.1771 −0.0552 0.0055 0 S6 −99 −0.1114 0.0792−0.2021 0.2673 −0.1852 0.0195 0.0443 −0.0169 0 S7 0 −0.2008 0.1406−0.378 0.4531 −0.181 −0.098 0.1117 −0.0281 0 S8 0 −0.2058 0.305 −0.59990.7319 −0.5351 0.226 −0.0525 0.0056 0 S9 0 −0.2836 0.4674 −0.4717 0.281−0.0742 −0.0163 0.0146 −0.0024 0 S10 2.8626 −0.3169 0.3012 −0.217 0.1252−0.0559 0.0174 −0.0033 0.0003 0 S11 −19.534 −0.0721 −0.0068 0.001 0.0098−0.009 0.003 −0.0004 8E−06 0 S12 −1.1368 0.1733 −0.17 0.0787 −0.0170.001 0.0003 −8E−05 5E−06 0 S13 −13.433 −0.0852 −0.045 0.0567 −0.02130.0042 −0.0005  3E−05 −8E−07  0 S14 −0.6859 −0.1597 0.0728 −0.02750.0078 −0.0016 0.0002 −2E−05 1E−06 −3.04E−08

Second Example

FIG. 3 is a view illustrating a second example of an optical imagingsystem, and FIG. 4 illustrates aberration curves of the optical imagingsystem of FIG. 3 .

An optical imaging system 2 includes a first lens 1002, a second lens2002, a third lens 3002, a fourth lens 4002, a fifth lens 5002, a sixthlens 6002, and a seventh lens 7002.

The first lens 1002 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2002 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3002 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4002 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5002 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6002 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6002. The seventh lens 7002 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7002.

The optical imaging system 2 further includes a stop, a filter 8002, andan image sensor 9002. The stop is disposed between the first lens 1002and the second lens 2002 to adjust an amount of light incident onto theimage sensor 9002. The filter 8002 is disposed between the seventh lens7002 and the image sensor 9002 to block infrared rays. The image sensor9002 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 3 , the stop is disposed at a distanceof 0.819 mm from the object-side surface of the first lens 1002 towardthe imaging plane of the optical imaging system 2. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 2 listed in Table 59 that appears later in this application.

Table 3 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 3 , and Table 4 below showsaspherical coefficients of the lenses of FIG. 3 .

TABLE 3 Index of Effective Surface Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.8214 0.8197 1.546 56.114 1.385 S2 Lens 7.7893 0.1087 1.326 (Stop) S3Second 5.1719 0.2010 1.669 20.353 1.239 S4 Lens 2.9302 0.3476 1.105 S5Third 13.2903 0.4297 1.546 56.114 1.131 S6 Lens 94.8027 0.1154 1.246 S7Fourth 6.2028 0.2300 1.669 20.353 1.265 S8 Lens 5.5654 0.2565 1.406 S9Fifth 62.0697 0.2968 1.644 23.516 1.511 S10 Lens 6.5524 0.2081 1.730 S11Sixth 3.6488 0.6096 1.546 56.114 1.899 S12 Lens −2.0249 0.4369 2.137 S13Seventh −2.5868 0.3500 1.546 56.114 2.814 S14 Lens 2.4492 0.1000 2.919S15 Filter Infinity 0.1100 1.519 64.197 3.199 S16 Infinity 0.6678 3.229S17 Imaging Infinity 0.0125 3.554 Plane

TABLE 4 K A B C D E F G H J S1 −1.0874 0.0187 0.0233 −0.0517 0.0813−0.0771 0.0432 −0.0131 0.0016 0 S2 11.207 −0.0709 0.0738 −0.0447 −0.00340.0253 −0.0199 0.0073 −0.0011 0 S3 0 0 0 0 0 0 0 0 0 0 S4 −1.7159−0.1013 0.1283 −0.0099 −0.1404 0.2054 −0.1306 0.0362 −0.0005 0 S5 0−0.0351 0.0048 −0.0722 0.1328 −0.1508 0.0837 −0.0151 −0.0012 0 S6 −99−0.0907 0.0028 0.0075 −0.057 0.1124 −0.1283 0.0764 −0.0179 0 S7 0−0.1848 0.0969 −0.4021 0.8416 −0.9593 0.6237 −0.2186 0.0322 0 S8 0−0.1431 0.1435 −0.4108 0.6792 −0.6541 0.3692 −0.1151 0.0155 0 S9 0−0.1884 0.2972 −0.3652 0.3066 −0.1803 0.0694 −0.0165 0.0019 0 S10 3.6183−0.2804 0.2545 −0.2142 0.1489 −0.0761 0.0249 −0.0045 0.0003 0 S11−19.534 −0.034 −0.0509 0.0367 −0.0233 0.0117 −0.004 0.0008 −7E−05 0 S12−0.8103 0.148 −0.1502 0.0738 −0.0262 0.0082 −0.0018 0.0002 −1E−05 0 S13−17.021 −0.1404 0.0048 0.0311 −0.0133 0.0027 −0.0003  2E−05 −4E−07 0 S14−0.6481 −0.1705 0.0806 −0.0297 0.0082 −0.0017 0.0002 −2E−05  1E−06−3E−08

Third Example

FIG. 5 is a view illustrating a third example of an optical imagingsystem, and FIG. 6 illustrates aberration curves of the optical imagingsystem of FIG. 5 .

An optical imaging system 3 includes a first lens 1003, a second lens2003, a third lens 3003, a fourth lens 4003, a fifth lens 5003, a sixthlens 6003, and a seventh lens 7003.

The first lens 1003 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2003 has a positive refractive power, a convex object-side surface, anda convex image-side surface. The third lens 3003 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4003 has a positive refractive power, a concaveobject-side surface, and a convex image-side surface. The fifth lens5003 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6003 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6003. The seventh lens 7003 has a positive refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7003, and one inflection point is formed on theimage-side surface of the seventh lens 7003.

The optical imaging system 3 further includes a stop, a filter 8003, andan image sensor 9003. The stop is disposed between the first lens 1003and the second lens 2003 to adjust an amount of light incident onto theimage sensor 9003. The filter 8003 is disposed between the seventh lens7003 and the image sensor 9003 to block infrared rays. The image sensor9003 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 5 , the stop is disposed at a distanceof 1.269 mm from the object-side surface of the first lens 1003 towardthe imaging plane of the optical imaging system 3. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 3 listed in Table 59 that appears later in this application.

Table 5 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 5 , and Table 6 below showsaspherical coefficients of the lenses of FIG. 5 .

TABLE 5 Effective Surface Radius of Thickness/ Index of Aperture No.Element Curvature Distance Refraction Abbe Number Radius S1 First 2.11020.4834 1.546 56.114 1.399 S2 Lens 3.4162 0.1350 1.350 S3 Second 3.05580.6301 1.546 56.114 1.315 S4 Lens −15.1552 0.0200 1.271 S5 (Stop) Third4.5780 0.2000 1.679 19.236 1.157 S6 Lens 2.2551 0.5241 1.095 S7 Fourth−1287.3355 0.3030 1.679 19.236 1.250 S8 Lens −1287.3355 0.1843 1.425 S9Fifth 3.2433 0.2905 1.546 56.114 1.646 S10 Lens 3.4026 0.2823 1.942 S11Sixth 3.4280 0.3922 1.679 19.236 2.150 S12 Lens 2.7145 0.1579 2.500 S13Seventh 1.5516 0.5459 1.537 53.955 2.761 S14 Lens 1.3918 0.2466 2.950S15 Filter Infinity 0.1100 1.519 64.166 3.302 S16 Infinity 0.6790 3.337S17 Imaging Infinity 0.0051 3.713 Plane

TABLE 6 K A B C D E F G H J S1 −7.5196 0.0675 −0.0698 0.0244 −0.0005−0.0217 0.0206 −0.0071 0.0008 0 S2 −19.661 −0.0151 −0.0861 0.0413 0.0298−0.039 0.0177 −0.0036 0.0002 0 S3 0.042 −0.0353 −0.035 0.0213 0.01180.039 −0.0637 0.0319 −0.0057 0 S4 0 0.0138 −0.0906 0.077 0.0651 −0.18610.1549 −0.0588 0.0085 0 S5 −5.6502 −0.0674 0.0271 −0.09 0.3133 −0.47720.3722 −0.1445 0.0223 0 S6 0.5327 −0.095 0.1043 −0.1591 0.2628 −0.30710.2264 −0.0923 0.017 0 S7 0 −0.0225 −0.0148 −0.069 0.2153 −0.2647 0.159−0.0441 0.0038 0 S8 0 −0.014 −0.0765 0.0175 0.0813 −0.0977 0.0453−0.0076 0 0 S9 −44.395 0.1485 −0.2238 0.1807 −0.1245 0.0673 −0.02620.0059 −0.0005 0 S10 −4.0715 −0.0248 0.0377 −0.0832 0.0717 −0.036 0.0107−0.0017 0.0001 0 S11 −1.1211 0.0048 −0.1328 0.1439 −0.1087 0.0484−0.0119 0.0015 −8E−05 0 S12 0.0464 −0.1304 0.0607 −0.038 0.0125 −0.00184E−05  2E−05 −2E−06 0 S13 −0.795 −0.4234 0.1968 −0.0585 0.0131 −0.00230.0003 −3E−05  2E−06 −4E−08 S14 −1.3233 −0.2821 0.1513 −0.0644 0.0208−0.0048 0.0007 −7E−05  4E−06 −8E−08

Fourth Example

FIG. 7 is a view illustrating a fourth example of an optical imagingsystem, and FIG. 8 illustrates aberration curves of the optical imagingsystem of FIG. 7 .

An optical imaging system 4 includes a first lens 1004, a second lens2004, a third lens 3004, a fourth lens 4004, a fifth lens 5004, a sixthlens 6004, and a seventh lens 7004.

The first lens 1004 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2004 has a positive refractive power, a convex object-side surface, anda convex image-side surface. The third lens 3004 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4004 has a negative refractive power, a concaveobject-side surface, and a convex image-side surface. The fifth lens5004 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6004 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6004. The seventh lens 7004 has a positive refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7004, and one inflection point is formed on theimage-side surface of the seventh lens 7004.

The optical imaging system 4 further includes a stop, a filter 8004, andan image sensor 9004. The stop is disposed between the first lens 1004and the second lens 2004 to adjust an amount of light incident onto theimage sensor 9004. The filter 8004 is disposed between the seventh lens7004 and the image sensor 9004 to block infrared rays. The image sensor9004 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 7 , the stop is disposed at a distanceof 1.259 mm from the object-side surface of the first lens 1004 towardthe imaging plane of the optical imaging system 4. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 4 listed in Table 59 that appears later in this application.

Table 7 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 7 , and Table 8 below showsaspherical coefficients of the lenses of FIG. 7 .

TABLE 7 Effective Surface Radius of Thickness/ Index of Aperture No.Element Curvature Distance Refraction Abbe Number Radius S1 First 2.10220.4835 1.546 56.114 1.408 S2 Lens 3.3563 0.1357 1.350 S3 Second 3.09070.6198 1.546 56.114 1.308 S4 Lens −13.9876 0.0200 1.271 S5 (Stop) Third4.8553 0.2000 1.679 19.236 1.157 S6 Lens 2.3669 0.5599 1.095 S7 Fourth−2272.1286 0.3012 1.679 19.236 1.270 S8 Lens −7278.4262 0.1848 1.442 S9Fifth 3.3546 0.2946 1.546 56.114 1.646 S10 Lens 3.5201 0.2604 1.947 S11Sixth 3.4723 0.3932 1.679 19.236 2.150 S12 Lens 2.7354 0.1549 2.500 S13Seventh 1.5570 0.5518 1.537 53.955 2.749 S14 Lens 1.3661 0.2501 2.950S15 Filter Infinity 0.1100 1.519 64.166 3.293 S16 Infinity 0.6646 3.328S17 Imaging Infinity 0.0054 3.699 Plane

TABLE 8 K A B C D E F G H J S1 −7.5279 0.0685 −0.0723 0.0313 −0.0131−0.0097 0.0144 −0.0054 0.0007 0 S2 −19.893 −0.0114 −0.0921 0.0405 0.0318−0.0345 0.0116 −0.001 −0.0002 0 S3 −0.0142 −0.0359 −0.0288 −0.00870.0581 0.0053 −0.0505 0.0291 −0.0054 0 S4 0 0.0225 −0.1301 0.1638−0.0413 −0.1012 0.1103 −0.0452 0.0067 0 S5 −6.2325 −0.061 −0.0037−0.0472 0.3094 −0.5229 0.4199 −0.1649 0.0257 0 S6 0.4782 −0.092 0.0962−0.1588 0.2881 −0.3518 0.2616 −0.1062 0.0192 0 S7 0 −0.0151 −0.05320.0425 0.0094 −0.0356 0.0085 0.009 −0.0039 0 S8 0 −0.0101 −0.0934 0.04970.0399 −0.0661 0.0321 −0.0053 0 0 S9 −49.08 0.1451 −0.2207 0.1683−0.1105 0.058 −0.0226 0.0051 −0.0005 0 S10 −5.4303 −0.0164 0.0172−0.0595 0.0534 −0.0275 0.0084 −0.0014  1E−04 0 S11 −1.136 0.0251 −0.18010.1935 −0.1377 0.0586 −0.014 0.0017 −9E−05 0 S12 0.0272 −0.1034 0.01663E−05 −0.0063 0.0037 −0.0009 0.0001 −5E−06 0 S13 −0.8 −0.4195 0.2062−0.0728 0.0211 −0.0048 0.0007 −8E−05  4E−06 −1E−07 S14 −1.3207 −0.29310.1671 −0.0741 0.0239 −0.0053 0.0008 −7E−05  4E−06 −8E−08

Fifth Example

FIG. 9 is a view illustrating a fifth example of an optical imagingsystem, and FIG. 10 illustrates aberration curves of the optical imagingsystem of FIG. 9 .

An optical imaging system 5 includes a first lens 1005, a second lens2005, a third lens 3005, a fourth lens 4005, a fifth lens 5005, a sixthlens 6005, and a seventh lens 7005.

The first lens 1005 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2005 has a positive refractive power, a convex object-side surface, anda convex image-side surface. The third lens 3005 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4005 has a negative refractive power, a concaveobject-side surface, and a convex image-side surface. The fifth lens5005 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6005 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6005. The seventh lens 7005 has a positive refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7005, and one inflection point is formed on theimage-side surface of the seventh lens 7005.

The optical imaging system 5 further includes a stop, a filter 8005, andan image sensor 9005. The stop is disposed between the first lens 1005and the second lens 2005 to adjust an amount of light incident onto theimage sensor 9005. The filter 8005 is disposed between the seventh lens7005 and the image sensor 9005 to block infrared rays. The image sensor9005 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 9 , the stop is disposed at a distanceof 1.169 mm from the object-side surface of the first lens 1005 towardthe imaging plane of the optical imaging system 5. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 5 listed in Table 59 that appears later in this application.

Table 9 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 9 , and Table 10 below showsaspherical coefficients of the lenses of FIG. 9 .

TABLE 9 Effective Radius of Thickness/ Index of Abbe Aperture SurfaceNo. Element Curvature Distance Refraction Number Radius S1 First 1.95120.4488 1.546 56.114 1.307 S2 Lens 3.1152 0.1260 1.253 S3 Second 2.86860.5753 1.546 56.114 1.214 S4 Lens −12.9825 0.0186 1.180 S5 (Stop) Third4.5064 0.1856 1.679 19.236 1.074 S6 Lens 2.1969 0.5197 1.016 S7 Fourth−2108.8653 0.2796 1.679 19.236 1.179 S8 Lens −6755.4364 0.1715 1.338 S9Fifth 3.1135 0.2734 1.546 56.114 1.528 S10 Lens 3.2672 0.2417 1.808 S11Sixth 3.2228 0.3650 1.679 19.236 1.996 S12 Lens 2.5388 0.1438 2.320 S13Seventh 1.4451 0.5122 1.537 53.955 2.500 S14 Lens 1.2680 0.2501 2.738S15 Filter Infinity 0.1100 1.519 64.166 2.940 S16 Infinity 0.5924 2.971S17 Imaging Infinity 0.0054 3.251 Plane

TABLE 10 K A B C D E F G H J S1 −7.5279 0.0857 −0.105 0.0528 −0.0256−0.0221 0.0379 −0.0166 0.0023 0 S2 −19.893 −0.0142 −0.1337 0.0682 0.0621−0.0783 0.0306 −0.0031 −0.0006 0 S3 −0.0142 −0.0449 −0.0418 −0.01470.1136 0.012 −0.1333 0.0892 −0.0193 0 S4 0 0.0281 −0.189 0.276 −0.0808−0.2297 0.2908 −0.1382 0.024 0 S5 −6.2325 −0.0763 −0.0054 −0.0795 0.6054−1.1875 1.107 −0.5047 0.0912 0 S6 0.4782 −0.115 0.1396 −0.2676 0.5637−0.7991 0.6898 −0.325 0.0682 0 S7 0 −0.0188 −0.0772 0.0717 0.0184 −0.0810.0225 0.0277 −0.0139 0 S8 0 −0.0127 −0.1356 0.0837 0.0781 −0.15020.0847 −0.0163 0 0 S9 −49.08 0.1815 −0.3205 0.2837 −0.2161 0.1317−0.0595 0.0158 −0.0017 0 S10 −5.4303 −0.0205 0.025 −0.1003 0.1046−0.0624 0.0222 −0.0043 0.0003 0 S11 −1.136 0.0314 −0.2615 0.3261 −0.26950.133 −0.0369 0.0053 −0.0003 0 S12 0.0272 −0.1293 0.0241 5E−05 −0.01230.0085 −0.0024 0.0003 −2E−05 0 S13 −0.8 −0.5247 0.2994 −0.1227 0.0414−0.0108 0.002 −0.0002   2E−05 −4E−07 S14 −1.3207 −0.3666 0.2425 −0.12480.0468 −0.0121 0.002 −0.0002   1E−05 −3E−07

Sixth Example

FIG. 11 is a view illustrating a sixth example of an optical imagingsystem, and FIG. 12 illustrates aberration curves of the optical imagingsystem of FIG. 11 .

An optical imaging system 6 includes a first lens 1006, a second lens2006, a third lens 3006, a fourth lens 4006, a fifth lens 5006, a sixthlens 6006, and a seventh lens 7006.

The first lens 1006 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2006 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3006 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4006 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5006 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6006 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6006. The seventh lens 7006 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7006.

The optical imaging system 6 further includes a stop, a filter 8006, andan image sensor 9006. The stop is disposed between the first lens 1006and the second lens 2006 to adjust an amount of light incident onto theimage sensor 9006. The filter 8006 is disposed between the seventh lens7006 and the image sensor 9006 to block infrared rays. The image sensor9006 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 11 , the stop is disposed at a distanceof 0.383 mm from the object-side surface of the first lens 1006 towardthe imaging plane of the optical imaging system 6. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 6 listed in Table 59 that appears later in this application.

Table 11 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 11 , and Table 12 belowshows aspherical coefficients of the lenses of FIG. 11 .

TABLE 11 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 2.18240.3329 1.546 56.114 1.380 S2 Lens 1.9439 0.0500 1.369 S3 Second 1.68570.7322 1.546 56.114 1.335 (Stop) Lens S4 28.3727 0.0500 1.264 S5 Third7.1536 0.2200 1.679 19.236 1.185 S6 Lens 2.9223 0.4264 1.050 S7 Fourth46.9146 0.3121 1.646 23.528 1.112 S8 Lens 17.5860 0.2616 1.268 S9 Fifth2.2655 0.2700 1.646 23.528 1.774 S10 Lens 2.3143 0.3731 1.839 S11 Sixth8.5186 0.6078 1.546 56.114 2.160 S12 Lens −1.9871 0.3782 2.308 S13Seventh −4.7165 0.3600 1.546 56.114 2.780 S14 Lens 1.8919 0.1457 2.998S15 Filter Infinity 0.1100 1.519 64.166 3.353 S16 Infinity 0.6600 3.385S17 Imaging Infinity 0.0100 3.712 Plane

TABLE 12 K A B C D E F G H S1 −3.5715 0.0005 0.0011 −0.0181 0.00250.0107 −0.0084 0.0026 −0.0003 S2 −9.1496 −0.0513 −0.0055 0.0116 0.0161−0.0207 0.0078 −0.001 0 S3 −2.5622 −0.0879 0.1115 −0.1204 0.1625 −0.13250.0578 −0.0118 0.0006 S4 −90 −0.078 0.2103 −0.4384 0.6397 −0.6153 0.3736−0.1288 0.0189 S5 0 −0.1133 0.2975 −0.5447 0.7496 −0.7199 0.4525 −0.16420.0257 S6 4.6946 −0.0705 0.1434 −0.2144 0.1998 −0.0956 −0.0142 0.0399−0.0137 S7 0 −0.0972 0.1221 −0.3303 0.5457 −0.6222 0.4555 −0.1995 0.0405S8 0 −0.1596 0.2027 −0.3281 0.3412 −0.2472 0.1212 −0.0385 0.0064 S9−18.27 −0.0564 −0.0069 0.0518 −0.0566 0.0228 −0.0011 −0.0019 0.0004 S10−15.127 −0.0603 −0.0145 0.0594 −0.0601 0.0318 −0.0096 0.0015 −1E−04 S110 0.0027 −0.0398 0.025 −0.0137 0.005 −0.001   1E−04 −4E−06 S12 −1.16930.1224 −0.1006 0.0535 −0.0195 0.005 −0.0008   8E−05 −3E−06 S13 −4.4446−0.097 −0.0137 0.0358 −0.0141 0.0028 −0.0003   2E−05 −5E−07 S14 −8.7431−0.0906 0.0342 −0.009 0.0017 −0.0002 2E−05 −1E−06   3E−08

Seventh Example

FIG. 13 is a view illustrating a seventh example of an optical imagingsystem, and FIG. 14 illustrates aberration curves of the optical imagingsystem of FIG. 13 .

An optical imaging system 7 includes a first lens 1007, a second lens2007, a third lens 3007, a fourth lens 4007, a fifth lens 5007, a sixthlens 6007, and a seventh lens 7007.

The first lens 1007 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2007 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3007 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4007 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5007 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6007 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6007. The seventh lens 7007 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7007.

The optical imaging system 7 further includes a stop, a filter 8007, andan image sensor 9007. The stop is disposed between the first lens 1007and the second lens 2007 to adjust an amount of light incident onto theimage sensor 9007. The filter 8007 is disposed between the seventh lens7007 and the image sensor 9007 to block infrared rays. The image sensor9007 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 13 , the stop is disposed at a distanceof 0.406 mm from the object-side surface of the first lens 1007 towardthe imaging plane of the optical imaging system 7. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 7 listed in Table 59 that appears later in this application.

Table 13 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 13 , and Table 14 belowshows aspherical coefficients of the lenses of FIG. 13 .

TABLE 13 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 2.41300.3501 1.546 56.114 1.537 S2 Lens 2.0911 0.0557 1.523 S3 Second 1.82090.8339 1.546 56.114 1.487 (Stop) Lens S4 30.3409 0.0612 1.394 S5 Third7.9820 0.2450 1.679 19.236 1.311 S6 Lens 3.2431 0.4785 1.169 S7 Fourth487.1996 0.3674 1.646 23.528 1.243 S8 Lens 31.8168 0.2878 1.436 S9 Fifth2.4474 0.2784 1.646 23.528 1.801 S10 Lens 2.4696 0.4070 2.073 S11 Sixth10.8471 0.6961 1.546 56.114 2.406 S12 Lens −2.0239 0.4094 2.510 S13Seventh −4.6240 0.4010 1.546 56.114 3.096 S14 Lens 2.0561 0.2000 3.356S15 Filter Infinity 0.1100 1.519 64.166 3.731 S16 Infinity 0.7069 3.760S17 Imaging Infinity 0.0093 4.108 Plane

TABLE 14 K A B C D E F G H S1 −3.5658 −7E−05 0.0019 −0.0092 0.00110.0033 −0.0021 0.0005 −5E−05 S2 −8.9286 −0.0352 −0.0028 0.0051 0.0057−0.0059 0.0017 −0.0002 0 S3 −2.4366 −0.0674 0.07 −0.0576 0.0566 −0.03350.0101 −0.0011 −5E−05 S4 100 −0.0532 0.1076 −0.1828 0.2279 −0.188 0.0972−0.0281 0.0034 S5 0 −0.08 0.1571 −0.2194 0.2412 −0.1897 0.098 −0.0290.0037 S6 4.6754 −0.0522 0.0819 −0.0948 0.0738 −0.0366 0.0059 0.0034−0.0014 S7 0 −0.0681 0.0624 −0.1419 0.1974 −0.1902 0.1178 −0.0435 0.0074S8 0 −0.1149 0.119 −0.1633 0.1494 −0.0968 0.0424 −0.0116 0.0015 S9−18.968 −0.0403 −0.0067 0.0231 −0.0177 0.0048 0.0003 −0.0004   7E−05 S10−15.615 −0.0435 −0.0045 0.0194 −0.0155 0.0065 −0.0016 0.0002 −1E−05 S110 −0.0047 −0.014 0.0069 −0.0046 0.0019 −0.0004   4E−05 −2E−06 S12−1.1609 0.0886 −0.0595 0.0289 −0.0106 0.0028 −0.0004   4E−05 −1E−06 S13−4.7786 −0.0727 −0.0022 0.0133 −0.0043 0.0007 −6E−05   3E−06 −5E−08 S14−8.9618 −0.0676 0.0222 −0.0053 0.0009 −0.0001   9E−06 −4E−07   7E−09

Eighth Example

FIG. 15 is a view illustrating an eighth example of an optical imagingsystem, and FIG. 16 illustrates aberration curves of the optical imagingsystem of FIG. 15 .

An optical imaging system 8 includes a first lens 1008, a second lens2008, a third lens 3008, a fourth lens 4008, a fifth lens 5008, a sixthlens 6008, and a seventh lens 7008.

The first lens 1008 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2008 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3008 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4008 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5008 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6008 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6008. The seventh lens 7008 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7008.

The optical imaging system 8 further includes a stop, a filter 8008, andan image sensor 9008. The stop is disposed between the first lens 1008and the second lens 2008 to adjust an amount of light incident onto theimage sensor 9008. The filter 8008 is disposed between the seventh lens7008 and the image sensor 9008 to block infrared rays. The image sensor9008 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 15 , the stop is disposed at a distanceof 0.335 mm from the object-side surface of the first lens 1008 towardthe imaging plane of the optical imaging system 8. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 8 listed in Table 59 that appears later in this application.

Table 15 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 15 , and Table 16 belowshows aspherical coefficients of the lenses of FIG. 15 .

TABLE 15 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 1.99210.2890 1.546 56.114 1.269 S2 Lens 1.7264 0.0460 1.259 S3 Second 1.50330.6884 1.546 56.114 1.228 (Stop) Lens S4 25.0492 0.0505 1.151 S5 Third6.5899 0.2023 1.679 19.236 1.083 S6 Lens 2.6775 0.3951 0.966 S7 Fourth402.2288 0.3033 1.646 23.528 1.026 S8 Lens 26.2678 0.2376 1.187 S9 Fifth2.0206 0.2299 1.646 23.528 1.490 S10 Lens 2.0389 0.3360 1.715 S11 Sixth8.9553 0.5747 1.546 56.114 1.986 S12 Lens −1.6709 0.3380 2.074 S13Seventh −3.8176 0.3310 1.546 56.114 2.556 S14 Lens 1.6975 0.1461 2.773S15 Filter Infinity 0.1100 1.519 64.166 3.104 S16 Infinity 0.5900 3.134S17 Imaging Infinity 0.0093 3.409 Plane

TABLE 16 K A B C D E F G H S1 −3.5658 −0.0001 0.005 −0.035 0.006 0.0273−0.0256 0.0093 −0.0013 S2 −8.9286 −0.0626 −0.0074 0.0197 0.0322 −0.04840.0209 −0.0032 0 S3 −2.4366 −0.1197 0.1825 −0.2203 0.3179 −0.276 0.1215−0.0196 −0.0013 S4 100 −0.0946 0.2806 −0.6992 1.2789 −1.5482 1.1736−0.498 0.0885 S5 0 −0.1422 0.4096 −0.8391 1.3535 −1.5621 1.1838 −0.51460.0955 S6 4.6754 −0.0927 0.2136 −0.3628 0.4139 −0.3014 0.0714 0.0601−0.0365 S7 0 −0.1209 0.1626 −0.5427 1.1077 −1.5662 1.4226 −0.7711 0.1921S8 0 −0.2042 0.3103 −0.6247 0.8383 −0.7972 0.512 −0.2051 0.0399 S9−18.968 −0.0716 −0.0174 0.0884 −0.0994 0.0393 0.0033 −0.0076 0.0017 S10−15.615 −0.0773 −0.0117 0.074 −0.0868 0.0537 −0.0194 0.0038 −0.0003 S110 −0.0084 −0.0364 0.0262 −0.0257 0.0153 −0.0048 0.0008 −5E−05 S12−1.1609 0.1575 −0.1551 0.1106 −0.0597 0.0227 −0.0054 0.0007 −4E−05 S13−4.7786 −0.1291 −0.0057 0.0509 −0.0242 0.0056 −0.0007   5E−05 −1E−06 S14−8.9618 −0.1202 0.0579 −0.0202 0.005 −0.0009 0.0001 −7E−06   2E−07

Ninth Example

FIG. 17 is a view illustrating a ninth example of an optical imagingsystem, and FIG. 18 illustrates aberration curves of the optical imagingsystem of FIG. 17 .

An optical imaging system 9 includes a first lens 1009, a second lens2009, a third lens 3009, a fourth lens 4009, a fifth lens 5009, a sixthlens 6009, and a seventh lens 7009.

The first lens 1009 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2009 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3009 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4009 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5009 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6009 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6009. The seventh lens 7009 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7009.

The optical imaging system 9 further includes a stop, a filter 8009, andan image sensor 9009. The stop is disposed between the first lens 1009and the second lens 2009 to adjust an amount of light incident onto theimage sensor 9009. The filter 8009 is disposed between the seventh lens7009 and the image sensor 9009 to block infrared rays. The image sensor9009 forms an imaging plane on which an image of the subject is formed.Although not illustrated in FIG. 17 , the stop is disposed at a distanceof 0.731 mm from the object-side surface of the first lens 1009 towardthe imaging plane of the optical imaging system 9. This distance isequal to TTL-SL and can be calculated from the values of TTL and SL forExample 9 listed in Table 59 that appears later in this application.

Table 17 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 17 , and Table 18 belowshows aspherical coefficients of the lenses of FIG. 17 .

TABLE 17 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.732331 0.731243 1.546 56.114 1.250 S2 (Stop) Lens 12.53699 0.0700231.181 S3 Second 5.589296 0.2 1.667 20.353 1.147 S4 Lens 2.573966 0.397151.100 S5 Third 8.065523 0.384736 1.546 56.114 1.128 S6 Lens 7.8366810.192591 1.247 S7 Fourth 6.687158 0.244226 1.546 56.114 1.276 S8 Lens30.32847 0.271297 1.374 S9 Fifth −3.28742 0.24968 1.667 20.353 1.481 S10Lens −4.51593 0.138845 1.734 S11 Sixth 5.679879 0.519865 1.546 56.1142.150 S12 Lens −1.89003 0.316634 2.318 S13 Seventh −3.93255 0.3 1.54656.114 2.640 S14 Lens 1.741826 0.193709 2.747 S15 Filter Infinity 0.111.518 64.166 3.146 S16 Infinity 0.77 3.177 S17 Imaging Infinity 0.013.536 Plane

TABLE 18 K A B C D E F G H J S1 −0.7464 0.0139 0.0344 −0.0749 0.1029−0.0706 0.0173 0.0042 −0.0023 0 S2 36.669 −0.0823 0.195 −0.3067 0.3634−0.323 0.1902 −0.0632 0.0086 0 S3 −1.3559 −0.1603 0.3305 −0.4059 0.3324−0.1787 0.0673 −0.0166 0.0018 0 S4 −0.4109 −0.0907 0.1444 0.1155 −0.79691.5009 −1.4406 0.7219 −0.147 0 S5 0 −0.0739 0.0463 −0.1203 0.1165−0.0578 −0.0089 0.0233 −0.0057 0 S6 0 −0.0932 0.0034 0.0521 −0.18270.2457 −0.2173 0.1126 −0.0241 0 S7 25.148 −0.1235 −0.1887 0.3763 −0.5540.6731 −0.5796 0.2782 −0.0538 0 S8 −99 −9E−05 −0.3274 0.3588 −0.31950.3451 −0.2608 0.0995 −0.0144 0 S9 −70.894 0.0205 0.0483 −0.5284 0.7583−0.4915 0.1636 −0.0271 0.0018 0 S10 2.2832 0.1759 −0.3448 0.2283 −0.07160.011 −0.0007 −4E−06   1E−06 0 S11 −99 0.1188 −0.2169 0.1675 −0.08710.0276 −0.0049 0.0005 −2E−05 0 S12 −3.3067 0.1644 −0.1849 0.1159 −0.0490.0138 −0.0024 0.0002 −9E−06 0 S13 −2.4772 −0.1026 −0.0482 0.074 −0.03080.0067 −0.0008   6E−05 −2E−06 0 S14 −1.1028 −0.2935 0.2033 −0.11270.0457 −0.0129 0.0024 −0.0003   2E−05 −5E−07

Tenth Example

FIG. 19 is a view illustrating a tenth example of an optical imagingsystem, and FIG. 20 illustrates aberration curves of the optical imagingsystem of FIG. 19 .

An optical imaging system 10 includes a first lens 1010, a second lens2010, a third lens 3010, a fourth lens 4010, a fifth lens 5010, a sixthlens 6010, and a seventh lens 7010.

The first lens 1010 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2010 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3010 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4010 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5010 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6010 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6010. The seventh lens 7010 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7010.

The optical imaging system 10 further includes a stop, a filter 8010,and an image sensor 9010. The stop is disposed between the first lens1010 and the second lens 2010 to adjust an amount of light incident ontothe image sensor 9010. The filter 8010 is disposed between the seventhlens 7010 and the image sensor 9010 to block infrared rays. The imagesensor 9010 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 19 , the stop is disposed at adistance of 0.737 mm from the object-side surface of the first lens 1010toward the imaging plane of the optical imaging system 10. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 10 listed in Table 59 that appears later in thisapplication.

Table 19 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 19 , and Table 20 belowshows aspherical coefficients of the lenses of FIG. 19 .

TABLE 19 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.777278 0.736573 1.546 56.114 1.320 S2 (Stop) Lens 13.62441 0.0316361.275 S3 Second 4.156793 0.18 1.667 20.353 1.219 S4 Lens 2.3231540.415145 1.100 S5 Third 9.38632 0.312854 1.546 56.114 1.130 S6 Lens7.304398 0.164797 1.218 S7 Fourth 7.311147 0.508697 1.546 56.114 1.233S8 Lens 92.26655 0.162901 1.389 S9 Fifth −2.84132 0.524055 1.667 20.3531.445 S10 Lens −3.99298 0.03 1.787 S11 Sixth 5.494047 0.654593 1.54656.114 2.150 S12 Lens −1.12273 0.206008 2.007 S13 Seventh −1.73815 0.31.546 56.114 2.349 S14 Lens 1.687765 0.282739 2.691 S15 Filter Infinity0.11 1.518 64.166 2.880 S16 Infinity 0.77 2.910 S17 Imaging Infinity0.01 3.271 Plane

TABLE 20 K A B C D E F G H J S1 −0.6693 0.019 0.0045 0.0138 −0.0410.0654 −0.0558 0.0249 −0.0047 0 S2 51.354 −0.0646 0.1594 −0.2048 0.08090.1061 −0.1535 0.0751 −0.0134 0 S3 −6.8814 −0.1184 0.2116 −0.2405 0.07470.1828 −0.2452 0.1235 −0.0229 0 S4 −1.4466 −0.0499 −0.0095 0.3771−1.1385 1.8052 −1.5802 0.7251 −0.1318 0 S5 0 −0.0499 −0.0342 0.0831−0.3182 0.5579 −0.5566 0.305 −0.0691 0 S6 0 −0.0934 −0.0586 0.1916−0.4553 0.5166 −0.3324 0.1317 −0.0262 0 S7 18.234 −0.1289 −0.0804 0.11490.0235 −0.43 0.5839 −0.3172 0.0637 0 S8 −99 0.0227 −0.4036 0.4973−0.4749 0.3803 −0.201 0.055 −0.0054 0 S9 −36.527 0.0274 −0.2464 0.10660.0955 −0.0649 −0.0225 0.0256 −0.0053 0 S10 −0.0175 0.1824 −0.41610.4182 −0.2413 0.0789 −0.0128 0.0006   3E−05 0 S11 −99 0.0729 −0.16360.155 −0.0934 0.0312 −0.0057 0.0005 −2E−05 0 S12 −2.7695 0.107 −0.08980.0394 −0.0119 0.0025 −0.0003 2E−05 −7E−07 0 S13 −9.7133 0.0409 −0.18390.1384 −0.0498 0.0103 −0.0012 8E−05 −2E−06 0 S14 −0.9525 −0.1967 0.0964−0.0426 0.0158 −0.0044 0.0009 −0.0001   7E−06 −2E−07

Eleventh Example

FIG. 21 is a view illustrating an eleventh example of an optical imagingsystem, and FIG. 22 illustrates aberration curves of the optical imagingsystem of FIG. 21 .

An optical imaging system 11 includes a first lens 1011, a second lens2011, a third lens 3011, a fourth lens 4011, a fifth lens 5011, a sixthlens 6011, and a seventh lens 7011.

The first lens 1011 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2011 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3011 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4011 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5011 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6011 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6011. The seventh lens 7011 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7011.

The optical imaging system 11 further includes a stop, a filter 8011,and an image sensor 9011. The stop is disposed between the first lens1011 and the second lens 2011 to adjust an amount of light incident ontothe image sensor 9011. The filter 8011 is disposed between the seventhlens 7011 and the image sensor 9011 to block infrared rays. The imagesensor 9011 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 21 , the stop is disposed at adistance of 0.698 mm from the object-side surface of the first lens 1011toward the imaging plane of the optical imaging system 1. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 11 listed in Table 59 that appears later in thisapplication.

Table 21 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 21 , and Table 22 belowshows aspherical coefficients of the lenses of FIG. 21 .

TABLE 21 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.726735 0.698185 1.546 56.114 1.250 S2 (Stop) Lens 13.25202 0.0667591.195 S3 Second 5.51026 0.18 1.667 20.353 1.175 S4 Lens 2.56553 0.3943641.100 S5 Third 8.494554 0.429258 1.546 56.114 1.132 S6 Lens 7.8776190.205752 1.258 S7 Fourth 6.709784 0.303462 1.546 56.114 1.283 S8 Lens26.70168 0.260598 1.392 S9 Fifth −3.30097 0.260736 1.667 20.353 1.463S10 Lens −4.37166 0.096789 1.707 S11 Sixth 5.420612 0.504951 1.54656.114 2.150 S12 Lens −1.71566 0.279179 2.282 S13 Seventh −3.94342 0.31.546 56.114 2.546 S14 Lens 1.572783 0.214183 2.633 S15 Filter Infinity0.11 1.518 64.166 2.722 S16 Infinity 0.77 2.764 S17 Imaging Infinity0.01 3.267 Plane

TABLE 22 K A B C D E F G H J S1 −0.7517 0.0167 0.0218 −0.0308 0.01220.045 −0.0708 0.0409 −0.0088 0 S2 34.832 −0.0755 0.1989 −0.3733 0.5214−0.513 0.3178 −0.1083 0.0151 0 S3 −2.6402 −0.1515 0.3308 −0.4895 0.5339−0.4166 0.2235 −0.0704 0.0093 0 S4 −0.5069 −0.0857 0.1535 −0.0035−0.4469 0.9403 −0.9224 0.4651 −0.0943 0 S5 0 −0.0679 0.0488 −0.18880.3474 −0.4437 0.3431 −0.1418 0.0251 0 S6 0 −0.09 −0.0268 0.1418 −0.34750.412 −0.3072 0.1379 −0.0272 0 S7 25.097 −0.1247 −0.1915 0.4352 −0.61010.6141 −0.4745 0.2289 −0.0464 0 S8 −99 0.011 −0.4269 0.5921 −0.57480.4876 −0.2996 0.1034 −0.0143 0 S9 −68.611 0.0834 −0.1663 −0.271 0.6084−0.449 0.1594 −0.0274 0.0018 0 S10 2.9309 0.2443 −0.5003 0.3866 −0.15960.039 −0.0058 0.0005 −2E−05 0 S11 −99 0.1262 −0.2305 0.1843 −0.09880.0321 −0.0059 0.0006 −2E−05 0 S12 −3.6172 0.1432 −0.1567 0.0947 −0.03810.0102 −0.0017 0.0002 −6E−06 0 S13 −2.5851 −0.0853 −0.0998 0.1236−0.0546 0.0131 −0.0018 0.0001 −4E−06 0 S14 −1.0626 −0.3198 0.227 −0.13150.0571 −0.0175 0.0036 −0.0005   3E−05 −1E−06

Twelfth Example

FIG. 23 is a view illustrating a twelfth example of an optical imagingsystem, and FIG. 24 illustrates aberration curves of the optical imagingsystem of FIG. 23 .

An optical imaging system 12 includes a first lens 1012, a second lens2012, a third lens 3012, a fourth lens 4012, a fifth lens 5012, a sixthlens 6012, and a seventh lens 7012.

The first lens 1012 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2012 has a positive refractive power, a convex object-side surface, anda convex image-side surface. The third lens 3012 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4012 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5012 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6012 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6012. The seventh lens 7012 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7012, and one inflection point is formed on theimage-side surface of the seventh lens 7012.

The optical imaging system 12 further includes a stop, a filter 8012,and an image sensor 9012. The stop is disposed between the second lens2012 and the third lens 3012 to adjust an amount of light incident ontothe image sensor 9012. The filter 8012 is disposed between the seventhlens 7012 and the image sensor 9012 to block infrared rays. The imagesensor 9012 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 23 , the stop is disposed at adistance of 1.158 mm from the object-side surface of the first lens 1012toward the imaging plane of the optical imaging system 12. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 12 listed in Table 59 that appears later in thisapplication.

Table 23 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 23 , and Table 24 belowshows aspherical coefficients of the lenses of FIG. 23 .

TABLE 23 Effective Radius of Thickness/ Index of Abbe Aperture SurfaceNo. Element Curvature Distance Refraction Number Radius S1 First 2.1410.481 1.546 56.114 1.450 S2 Lens 3.251 0.110 1.350 S3 Second 3.253 0.5421.546 56.114 1.285 S4 Lens −15.773 0.025 1.232 S5 (Stop) Third 8.4250.230 1.679 19.236 1.157 S6 Lens 3.514 0.625 1.095 S7 Fourth 25.9860.296 1.679 19.236 1.265 S8 Lens 15.894 0.230 1.452 S9 Fifth 3.048 0.4001.546 56.114 1.675 S10 Lens 3.616 0.290 2.092 S11 Sixth 3.762 0.4001.679 19.236 2.153 S12 Lens 2.792 0.204 2.476 S13 Seventh 1.614 0.5101.537 53.955 2.938 S14 Lens 1.326 0.196 3.102 S15 Filter Infinity 0.1101.518 64.197 3.420 S16 Infinity 0.639 3.450 S17 Imaging Infinity 0.0113.730 Plane

TABLE 24 K A B C D E F G H J S1 −8.038 0.0707 −0.0797 0.0334 0.0072−0.0491 0.0465 −0.0186 0.0032 −0.0002 S2 −20.594 −0.0019 −0.1494 0.2041−0.2922 0.3755 −0.3085 0.1486 −0.0387 0.0042 S3 −0.0908 −0.0339 −0.06410.1368 −0.2821 0.4921 −0.4815 0.2605 −0.0746 0.0088 S4 −0.4822 −0.04360.1761 −0.3256 0.1999 0.1916 −0.4291 0.3203 −0.1141 0.0162 S5 −1.1841−0.1073 0.2544 −0.4683 0.4991 −0.2863 0.0565 0.0325 −0.0229 0.0044 S60.8733 −0.0693 0.0357 0.2048 −0.8833 1.7328 −1.9742 1.3464 −0.5106 0.083S7 −0.4999 −0.0314 0.0135 −0.2894 0.9716 −1.7181 1.7923 −1.1152 0.3837−0.0563 S8 −1E−06 −0.0273 −0.1177 0.212 −0.2544 0.2157 −0.1264 0.0469−0.0093 0.0007 S9 −41.843 0.1624 −0.3487 0.4016 −0.3105 0.1396 −0.027−0.0038 0.0026 −0.0003 S10 −5.1424 0.0397 −0.1364 0.1569 −0.1229 0.0633−0.0212 0.0044 −0.0005   3E−05 511 −2.1666 0.0356 −0.1809 0.1985 −0.14380.0641 −0.0173 0.0028 −0.0002   9E−06 S12 −0.0207 −0.1043 0.0239 −0.0063−0.0007 0.0007 −3E−06 −4E−05 7E−06 −4E−07 S13 −0.7948 −0.4128 0.1863−0.0516 0.0101 −0.0015 0.0002 −1E−05 6E−07 −1E−08 S14 −1.3226 −0.31050.1713 −0.0712 0.0213 −0.0043 0.0006 −5E−05 2E−06 −5E−08

Thirteenth Example

FIG. 25 is a view illustrating a thirteenth example of an opticalimaging system, and FIG. 26 illustrates aberration curves of the opticalimaging system of FIG. 25 .

An optical imaging system 13 includes a first lens 1013, a second lens2013, a third lens 3013, a fourth lens 4013, a fifth lens 5013, a sixthlens 6013, and a seventh lens 7013.

The first lens 1013 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2013 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3013 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4013 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5013 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6013 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6013. The seventh lens 7013 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7013, and one inflection point is formed on theimage-side surface of the seventh lens 7013.

The optical imaging system 13 further includes a stop, a filter 8013,and an image sensor 9013. The stop is disposed between the second lens2013 and the third lens 3013 to adjust an amount of light incident ontothe image sensor 9013. The filter 8013 is disposed between the seventhlens 7013 and the image sensor 9013 to block infrared rays. The imagesensor 9013 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 25 , the stop is disposed at adistance of 1.077 mm from the object-side surface of the first lens 1013toward the imaging plane of the optical imaging system 13. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 13 listed in Table 59 that appears later in thisapplication.

Table 25 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 25 , and Table 26 belowshows aspherical coefficients of the lenses of FIG. 25 .

TABLE 25 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.118305139 0.467301 1.546 56.114 1.360 S2 Lens 2.746507151 0.0882911.343 S3 Second 2.805315991 0.495083 1.546 56.114 1.313 S4 Lens29.97218136 0.026058 1.266 S5 (Stop) Third 5.620498788 0.273577 1.67919.236 1.212 S6 Lens 2.858933317 0.365293 1.199 S7 Fourth 6.0851103450.415715 1.546 56.114 1.285 S8 Lens 19.14383505 0.530007 1.350 S9 Fifth5.783090879 0.4 1.679 19.236 1.600 S10 Lens 4.564410244 0.188701 2.100S11 Sixth 2.807723971 0.444625 1.546 56.114 1.903 S12 Lens 3.201153970.276382 2.470 S13 Seventh 1.650083939 0.458527 1.546 56.114 2.646 S14Lens 1.194405383 0.21044 2.806 S15 Filter Infinity 0.21 1.518 64.1973.241 S16 Infinity 0.643292 3.319 S17 Imaging Infinity 0.006708 3.729Plane

TABLE 26 K A B C D E F G H J S1 −1 −0.0103 0.0078 −0.0588 0.0925 −0.09040.0486 −0.0119 0.0004 0.0002 S2 −13.05 0.0258 −0.1274 0.035 0.0617−0.0405 0.0003 0.0049 −0.0007 −0.0001 S3 −1.2154 −0.0166 −0.0602 −0.01710.0625 0.0481 −0.1007 0.0511 −0.0092 0.0002 S4 −7.0515 −0.047 0.2681−0.8387 1.4546 −1.5426 1.0264 −0.4201 0.0974 −0.0099 S5 8.8287 −0.09820.3106 −0.8268 1.4538 −1.7174 1.3464 −0.6715 0.1944 −0.025 S6 1.7217−0.0695 0.0939 −0.1196 0.1421 −0.2108 0.2773 −0.2257 0.0997 −0.0182 S7−1.4309 −0.0448 −0.0056 0.0299 −0.0484 −0.0039 0.0856 −0.1013 0.0511−0.0095 S8 5.8592 −0.0455 −0.0133 0.0337 −0.0729 0.0922 −0.0766 0.0411−0.0128 0.0018 S9 −43.521 0.0008 −0.0239 0.0222 −0.0173 0.0051 −0.0002−0.0003   5E−05   5E−06 S10 −11.855 −0.0163 −0.0578 0.0832 −0.067 0.0334−0.0109 0.0023 −0.0003   1E−05 S11 −16.199 0.1024 −0.1959 0.1931 −0.15640.0797 −0.0243 0.0044 −0.0004   2E−05 S12 0.1668 −0.0913 0.11 −0.10750.0537 −0.0157 0.0029 −0.0003   2E−05 −6E−07 S13 −0.8022 −0.4375 0.2118−0.049 0.0016 0.0021 −0.0006 7E−05 −4E−06   1E−07 S14 −1.407 −0.37090.2499 −0.1268 0.0461 −0.0114 0.0018 −0.0002   1E−05 −3E−07

Fourteenth Example

FIG. 27 is a view illustrating a fourteenth example of an opticalimaging system, and FIG. 28 illustrates aberration curves of the opticalimaging system of FIG. 27 .

An optical imaging system 14 includes a first lens 1014, a second lens2014, a third lens 3014, a fourth lens 4014, a fifth lens 5014, a sixthlens 6014, and a seventh lens 7014.

The first lens 1014 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2014 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3014 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4014 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5014 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6014 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6014. The seventh lens 7014 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7014, and one inflection point is formed on theimage-side surface of the seventh lens 7014.

The optical imaging system 14 further includes a stop, a filter 8014,and an image sensor 9014. The stop is disposed between the second lens2014 and the third lens 3014 to adjust an amount of light incident ontothe image sensor 9014. The filter 8014 is disposed between the seventhlens 7014 and the image sensor 9014 to block infrared rays. The imagesensor 9014 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 27 , the stop is disposed at adistance of 1.230 mm from the object-side surface of the first lens 1014toward the imaging plane of the optical imaging system 14. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 14 listed in Table 59 that appears later in thisapplication.

Table 27 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 27 , and Table 28 belowshows aspherical coefficients of the lenses of FIG. 27 .

TABLE 27 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.075993714 0.461868 1.546 56.114 1.450 S2 Lens 2.462677578 0.1427671.423 S3 Second 2.513805379 0.6 1.546 56.114 1.392 S4 Lens 29.011046450.025 1.339 S5 (Stop) Third 8.684767584 0.23 1.679 19.236 1.295 S6 Lens3.558027838 0.403456 1.273 S7 Fourth 4.7911408 0.352214 1.546 56.1141.378 S8 Lens 7.075227558 0.349153 1.451 S9 Fifth 4.281224487 0.35 1.54656.114 1.632 S10 Lens 6.135345116 0.360979 2.012 S11 Sixth 4.4147672460.43 1.679 19.236 2.013 S12 Lens 3.921880607 0.295711 2.303 S13 Seventh1.740330993 0.438887 1.546 56.114 2.548 S14 Lens 1.223557467 0.1999662.831 S15 Filter Infinity 0.21 1.518 64.197 3.299 S16 Infinity 0.6374533.369871273 S17 Imaging Infinity 0.012547 3.730619904 Plane

TABLE 28 K A B C D E F G H J S1 −1 −0.0092 0.003 −0.0414 0.0636 −0.05620.026 −0.0049 −0.0002 0.0001 S2 −11.557 0.0601 −0.1844 0.2568 −0.35240.3604 −0.23 0.0871 −0.018 0.0016 S3 −0.8307 −0.0024 −0.0852 0.1656−0.3174 0.3977 −0.2764 0.1063 −0.0212 0.0016 S4 33.131 −0.027 0.1754−0.4193 0.3931 −0.0382 −0.2294 0.1977 −0.0691 0.0091 S5 14.848 −0.090.2473 −0.422 0.2881 0.1413 −0.4099 0.3093 −0.1063 0.0142 S6 2.0645−0.0757 0.0883 0.0177 −0.3102 0.6013 −0.6108 0.357 −0.1119 0.0146 S7−10.536 −0.0399 −0.0508 0.2144 −0.4431 0.5288 −0.3825 0.1604 −0.0340.0025 S8 1.3378 −0.0489 −0.0512 0.1032 −0.1013 0.0149 0.0599 −0.05760.0222 −0.0032 S9 −44.096 0.0784 −0.1355 0.1317 −0.0913 0.0374 −0.00910.001   4E−05 −1E−05 S10 −6.651 0.049 −0.1189 0.1277 −0.0852 0.0342−0.0083 0.0012 −1E−04   3E−06 S11 −13.816 0.0584 −0.1268 0.1161 −0.08370.0379 −0.0102 0.0016 −0.0001   5E−06 S12 1.0596 −0.0574 0.0273 −0.02480.0087 −0.0016 0.0002 −9E−06   2E−07 −5E−10 S13 −0.8717 −0.4042 0.1652−0.0262 −0.0057 0.0037 −0.0008   9E−05 −6E−06   1E−07 S14 −1.3714−0.3652 0.2385 −0.1205 0.0439 −0.0107 0.0017 −0.0002   9E−06 −2E−07

Fifteenth Example

FIG. 29 is a view illustrating a fifteenth example of an optical imagingsystem, and FIG. 30 illustrates aberration curves of the optical imagingsystem of FIG. 29 .

An optical imaging system 15 includes a first lens 1015, a second lens2015, a third lens 3015, a fourth lens 4015, a fifth lens 5015, a sixthlens 6015, and a seventh lens 7015.

The first lens 1015 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2015 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3015 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4015 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5015 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6015 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6015. The seventh lens 7015 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7015, and one inflection point is formed on theimage-side surface of the seventh lens 7015.

The optical imaging system 15 further includes a stop, a filter 8015,and an image sensor 9015. The stop is disposed between the second lens2015 and the third lens 3015 to adjust an amount of light incident ontothe image sensor 9015. The filter 8015 is disposed between the seventhlens 7015 and the image sensor 9015 to block infrared rays. The imagesensor 9015 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 29 , the stop is disposed at adistance of 1.272 mm from the object-side surface of the first lens 1015toward the imaging plane of the optical imaging system 15. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 15 listed in Table 59 that appears later in thisapplication.

Table 29 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 29 , and Table 30 belowshows aspherical coefficients of the lenses of FIG. 29 .

TABLE 29 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.283093838 0.490729 1.546 56.114 1.470 S2 Lens 2.707510257 0.1562111.439 S3 Second 2.740085348 0.6 1.546 56.114 1.405 S4 Lens 44.170954810.025 1.322 S5 (Stop) Third 9.160760578 0.23 1.679 19.236 1.287 S6 Lens3.724008354 0.422131 1.325 S7 Fourth 5.85087532 0.453108 1.546 56.1141.461 S8 Lens 9.666213958 0.418018 1.563 S9 Fifth 4.726356381 0.4630351.546 56.114 1.772 S10 Lens 8.447007624 0.424734 2.209 S11 Sixth6.360171602 0.454398 1.679 19.236 2.238 S12 Lens 3.885246175 0.2297962.557 S13 Seventh 1.81506609 0.565464 1.546 56.114 3.026 S14 Lens1.393810895 0.307376 3.262 S15 Filter Infinity 0.11 1.518 64.197 3.692S16 Infinity 0.635004 3.733 S17 Imaging Infinity 0.015 4.155 Plane

TABLE 30 K A B C D E F G H J S1 −1 −0.01 0.0142 −0.0583 0.0925 −0.090.0524 −0.0176 0.0031 −0.0002 S2 −11.438 0.0551 −0.1648 0.2592 −0.34270.3017 −0.1612 0.0505 −0.0085 0.0006 S3 −0.9056 0.0096 −0.113 0.2287−0.3273 0.271 −0.1107 0.0148 0.0028 −0.0007 S4 42.634 0.0014 −0.19531.05 −2.3921 2.8557 −1.9404 0.7573 −0.1585 0.0138 S5 14.891 −0.0708−0.0264 0.7649 −2.0539 2.6215 −1.8758 0.7719 −0.1712 0.0159 S6 1.8252−0.0676 0.0559 0.1408 −0.4974 0.6826 −0.5253 0.2382 −0.0594 0.0063 S7−10.152 −0.0045 −0.2167 0.6751 −1.1658 1.2261 −0.8032 0.3179 −0.0690.0063 S8 1.7534 −0.0452 −0.0162 0.0022 0.0594 −0.1108 0.0956 −0.04540.0115 −0.0012 S9 −44.62 0.0743 −0.114 0.0998 −0.0717 0.0382 −0.01470.0036 −0.0005   3E−05 S10 −4.9001 0.0668 −0.093 0.0627 −0.027 0.007−0.001   7E−05 −1E−06 −8E−08 S11 −13.159 0.0655 −0.1106 0.0833 −0.04590.016 −0.0034 0.0004 −3E−05   8E−07 S12 0.8181 −0.0437 −0.0059 0.0082−0.0058 0.0021 −0.0004   5E−05 −3E−06   6E−08 S13 −0.8756 −0.2944 0.0941−0.0094 −0.0031 0.0013 −0.0002   2E−05 −9E−07   2E−08 S14 −1.3021−0.2412 0.1156 −0.0414 0.0109 −0.002 0.0002 −2E−05   8E−07 −1E−08

Sixteenth Example

FIG. 31 is a view illustrating a sixteenth example of an optical imagingsystem, and FIG. 32 illustrates aberration curves of the optical imagingsystem of FIG. 31 .

An optical imaging system 16 includes a first lens 1016, a second lens2016, a third lens 3016, a fourth lens 4016, a fifth lens 5016, a sixthlens 6016, and a seventh lens 7016.

The first lens 1016 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2016 has a negative refractive power, a concave object-side surface, anda concave image-side surface. The third lens 3016 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4016 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5016 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6016 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6016. The seventh lens 7016 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7016, and one inflection point is formed on theimage-side surface of the seventh lens 7016.

The optical imaging system 16 further includes a stop, a filter 8016,and an image sensor 9016. The stop is disposed between the first lens1016 and the second lens 2016 to adjust an amount of light incident ontothe image sensor 9016. The filter 8016 is disposed between the seventhlens 7016 and the image sensor 9016 to block infrared rays. The imagesensor 9016 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 31 , the stop is disposed at adistance of 0.937 mm from the object-side surface of the first lens 1016toward the imaging plane of the optical imaging system 16. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 16 listed in Table 59 that appears later in thisapplication.

Table 31 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 31 , and Table 32 belowshows aspherical coefficients of the lenses of FIG. 31 .

TABLE 31 Effective Radius of Thickness/ Index of Aperture Surface No.Element Curvature Distance Refraction Abbe Number Radius S1 First 1.72110.6349 1.544 56.114 1.100 S2 Lens 13.3234 0.1017 1.041 S3 Second−1000.000 0.2000 1.661 20.353 1.021 S4 (Stop) Lens 4.7361 0.1000 0.971S5 Third 4.6607 0.3335 1.544 56.114 1.051 S6 Lens 23.5464 0.2491 1.010S7 Fourth 12.1969 0.2486 1.544 56.114 1.031 S8 Lens 12.3859 0.1797 1.085S9 Fifth −6.4179 0.3796 1.651 21.494 1.086 S10 Lens −11.3291 0.42681.351 S11 Sixth 3.3788 0.6037 1.544 56.114 1.630 S12 Lens 3.1853 0.30292.358 S13 Seventh 2.8749 0.4590 1.544 56.114 2.627 S14 Lens 1.68120.1384 2.733 S15 Filter Infinity 0.2100 3.185 S16 Infinity 0.5476 3.252S17 Imaging Infinity 0.0024 3.535 Plane

TABLE 32 K A B C D E F G H S1 0.0403 −0.0033 −0.0288 0.0988 −0.24380.3505 −0.2995 0.1381 −0.0267 S2 −26.097 −0.0597 0.0465 0.0268 −0.2020.3784 −0.3814 0.2052 −0.0463 S3 99 −0.1306 0.1983 −0.2114 0.1341−0.0049 −0.0843 0.0757 −0.023 S4 −19.357 −0.0963 0.1414 −0.236 0.3578−0.4974 0.5023 −0.2728 0.0568 S5 −1.8755 −0.0377 0.0445 −0.2833 0.9605−1.7724 1.943 −1.1128 0.2597 S6 −97.267 −0.0529 0.0313 −0.2548 1.0857−2.415 3.0964 −2.1094 0.6073 S7 −66.305 −0.17 −0.0426 −0.154 0.6893−1.226 1.3135 −0.812 0.2308 S8 19.549 −0.118 −0.0141 −0.2387 0.7519−1.0285 0.7605 −0.3206 0.0656 S9 31.916 −0.0788 0.1058 −0.2912 0.4792−0.4459 0.1766 −0.0286 0 S10 −63.754 −0.1368 0.1339 −0.1769 0.2186−0.1722 0.0666 −0.0093 0 S11 −43.951 0.0043 −0.1404 0.1501 −0.11840.0635 −0.0201 0.0026 0 S12 −31.504 0.0123 −0.0407 0.0204 −0.005 0.0006−2E−05 −2E−06 0 S13 −0.5356 −0.2928 0.1691 −0.069 0.0202 −0.0039 0.0005−3E−05 8E−07 S14 −0.8282 −0.2671 0.1453 −0.0648 0.0205 −0.0043 0.0006−4E−05 1E−06

Seventeenth Example

FIG. 33 is a view illustrating a seventeenth example of an opticalimaging system, and FIG. 34 illustrates aberration curves of the opticalimaging system of FIG. 33 .

An optical imaging system 17 includes a first lens 1017, a second lens2017, a third lens 3017, a fourth lens 4017, a fifth lens 5017, a sixthlens 6017, and a seventh lens 7017.

The first lens 1017 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2017 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3017 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4017 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5017 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6017 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6017. The seventh lens 7017 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7017.

The optical imaging system 17 further includes a stop, a filter 8017,and an image sensor 9017. The stop is disposed between the first lens1017 and the second lens 2017 to adjust an amount of light incident ontothe image sensor 9017. The filter 8017 is disposed between the seventhlens 7017 and the image sensor 9017 to block infrared rays. The imagesensor 9017 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 33 , the stop is disposed at adistance of 0.683 mm from the object-side surface of the first lens 1017toward the imaging plane of the optical imaging system 17. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 17 listed in Table 59 that appears later in thisapplication.

Table 33 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 33 , and Table 34 belowshows aspherical coefficients of the lenses of FIG. 33 .

TABLE 33 Effective Radius of Thickness/ Index of Aperture Surface No.Element Curvature Distance Refraction Abbe Number Radius S1 First 1.75020.6827 1.544 56.114 1.230 S2 (Stop) Lens 7.4508 0.1001 1.166 S3 Second5.3770 0.2200 1.661 20.353 1.155 S4 Lens 2.7475 0.3546 1.100 S5 Third6.4235 0.4429 1.544 56.114 1.138 S6 Lens 11.4085 0.2358 1.265 S7 Fourth9.7643 0.2971 1.544 56.114 1.301 S8 Lens 21.6599 0.2322 1.450 S9 Fifth−3.7199 0.2363 1.544 56.114 1.529 S10 Lens −3.8701 0.1000 1.732 S11Sixth 5.6702 0.5693 1.544 56.114 2.050 S12 Lens −2.6494 0.3771 2.354 S13Seventh −6.4349 0.3200 1.544 56.114 2.711 S14 Lens 1.6732 0.1493 2.940S15 Filter Infinity 0.1100 3.194 S16 Infinity 0.6300 3.226 S17 ImagingInfinity 0.0200 3.529 Plane

TABLE 34 K A B C D E F G H J S1 −0.804 0.0156 0.0271 −0.0389 0.01480.0472 −0.0717 0.0398 −0.0082 0 S2 8.8405 −0.0655 0.0311 0.1425 −0.4240.5691 −0.4286 0.1738 −0.0297 0 S3 −12.163 −0.141 0.214 −0.1913 0.1405−0.0962 0.0577 −0.0201 0.0025 0 S4 −0.4248 −0.0825 0.07 0.3355 −1.15241.8742 −1.6953 0.823 −0.1654 0 S5 0 −0.0664 0.0699 −0.2385 0.3963−0.4248 0.2636 −0.0832 0.0101 0 S6 0 −0.0849 0.0295 −0.0243 −0.13240.2622 −0.2505 0.1282 −0.0271 0 S7 47.712 −0.1968 0.1845 −0.4516 0.7265−0.7784 0.4942 −0.1584 0.0188 0 S8 85.667 −0.1837 0.2201 −0.4192 0.411−0.1856 0.0288 0.0034 −0.001 0 S9 −99 −0.2337 0.709 −1.2742 1.1966−0.6217 0.1784 −0.0262 0.0015 0 S10 0.797 0.0272 0.0522 −0.2244 0.1994−0.0797 0.0164 −0.0017   7E−05 0 S11 −98.299 0.163 −0.2325 0.1653−0.0832 0.026 −0.0046 0.0004 −2E−05 0 S12 −4.1083 0.2226 −0.2311 0.1457−0.0646 0.0193 −0.0035 0.0004 −1E−05 0 S13 −0.7417 −0.0584 −0.13160.1263 −0.0468 0.0093 −0.001   6E−05 −2E−06 0 S14 −1.2275 −0.2296 0.1081−0.0388 0.0105 −0.002 0.0003 −2E−05   8E−07 −1E−08

Eighteenth Example

FIG. 35 is a view illustrating an eighteenth example of an opticalimaging system, and FIG. 36 illustrates aberration curves of the opticalimaging system of FIG. 35 .

An optical imaging system 18 includes a first lens 1018, a second lens2018, a third lens 3018, a fourth lens 4018, a fifth lens 5018, a sixthlens 6018, and a seventh lens 7018.

The first lens 1018 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2018 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3018 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4018 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5018 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6018 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6018. The seventh lens 7018 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7018.

The optical imaging system 18 further includes a stop, a filter 8018,and an image sensor 9018. The stop is disposed between the first lens1018 and the second lens 2018 to adjust an amount of light incident ontothe image sensor 9018. The filter 8018 is disposed between the seventhlens 7018 and the image sensor 9018 to block infrared rays. The imagesensor 9018 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 35 , the stop is disposed at adistance of 0.250 mm from the object-side surface of the first lens 1018toward the imaging plane of the optical imaging system 18. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 18 listed in Table 59 that appears later in thisapplication.

Table 35 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 35 , and Table 36 belowshows aspherical coefficients of the lenses of FIG. 35 .

TABLE 35 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 1.72110.6349 1.544 56.114 1.100 (Stop) S2 Lens 11.4571 0.1212 1.071 S3 Second119.1721 0.2033 1.661 20.353 1.057 S4 Lens 4.4758 0.0843 1.043 S5 Third4.5258 0.3109 1.544 56.114 1.051 S6 Lens 20.6082 0.2158 1.015 S7 Fourth13.2152 0.2369 1.544 56.114 1.019 S8 Lens 16.2733 0.2103 1.070 S9 Fifth−6.5732 0.4119 1.651 21.494 1.076 S10 Lens −10.4553 0.3710 1.320 S11Sixth 3.4779 0.6318 1.544 56.114 1.556 S12 Lens 3.1994 0.2672 2.337 S13Seventh 2.8804 0.5060 1.544 56.114 2.489 S14 Lens 1.7054 0.1384 2.666S15 Filter Infinity 0.2100 3.102 S16 Infinity 0.5794 3.177 S17 ImagingInfinity 0.0106 3.529 Plane

TABLE 36 K A B C D E F G H S1 0.0432 −0.0088 0.0131 −0.0627 0.1199−0.1345 0.077 −0.018 −0.0004 S2 −26.097 −0.0562 0.051 −0.0514 0.0595−0.0683 0.0462 −0.0139 −7E−05 S3 −99 −0.1283 0.1953 −0.2779 0.5135−0.8812 0.9662 −0.5723 0.1395 S4 −16.567 −0.0971 0.1552 −0.3608 0.985−2.059 2.5647 −1.6683 0.4378 S5 −1.6774 −0.0377 0.065 −0.4515 1.687−3.5163 4.2391 −2.6607 0.6752 S6 57.913 −0.0559 0.0533 −0.341 1.3373−2.8539 3.4811 −2.2114 0.5781 S7 −66.305 −0.1749 −0.0635 0.0963 −0.20610.5819 −0.9 0.6874 −0.1979 S8 19.549 −0.1228 −0.0686 0.0207 0.1647−0.2695 0.1725 −0.0616 0.0161 S9 29.709 −0.0709 0.0826 −0.3062 0.6009−0.6459 0.3344 −0.0761 0 S10 −31.338 −0.1255 0.1076 −0.1494 0.1908−0.1423 0.0506 −0.0065 0 S11 −46.453 0.0038 −0.1455 0.1534 −0.126 0.0705−0.0225 0.0029 0 S12 −31.504 0.0093 −0.0326 0.0149 −0.0033 0.0003 −1E−05−7E−07 0 S13 −0.5233 −0.2947 0.1709 −0.0627 0.0154 −0.0025 0.0003 −1E−05  3E−07 S14 −0.8257 −0.2584 0.1353 −0.0565 0.0166 −0.0032 0.0004 −3E−05  7E−07

Nineteenth Example

FIG. 37 is a view illustrating a nineteenth example of an opticalimaging system, and FIG. 38 illustrates aberration curves of the opticalimaging system of FIG. 37 .

An optical imaging system 19 includes a first lens 1019, a second lens2019, a third lens 3019, a fourth lens 4019, a fifth lens 5019, a sixthlens 6019, and a seventh lens 7019.

The first lens 1019 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2019 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3019 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4019 has a positive refractive power, a convexobject-side surface, and a convex image-side surface. The fifth lens5019 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6019 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6019. The seventh lens 7019 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7019.

The optical imaging system 19 further includes a stop, a filter 8019,and an image sensor 9019. The stop is disposed between the first lens1019 and the second lens 2019 to adjust an amount of light incident ontothe image sensor 9019. The filter 8019 is disposed between the seventhlens 7019 and the image sensor 9019 to block infrared rays. The imagesensor 9019 forms an imaging plane on which an image of the subject isformed.

Table 37 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 37 , and Table 38 belowshows aspherical coefficients of the lenses of FIG. 37 .

TABLE 37 Effective Radius of Thickness/ Index of Aperture Surface No.Element Curvature Distance Refraction Abbe Number Radius S1 First 1.77730.6238 1.544 56.114 1.217 S2 (Stop) Lens 6.4566 0.1000 1.158 S3 Second4.4103 0.2363 1.661 20.353 1.157 S4 Lens 2.6584 0.4138 1.184 S5 Third6.5879 0.4640 1.544 56.114 1.177 S6 Lens 10.5233 0.1777 1.282 S7 Fourth13.4749 0.3627 1.544 56.114 1.306 S8 Lens −20.2300 0.2325 1.444 S9 Fifth−3.1831 0.2000 1.661 20.353 1.456 S10 Lens −4.2151 0.1000 1.625 S11Sixth 6.7646 0.6089 1.544 56.114 2.207 S12 Lens −2.8792 0.4211 2.145 S13Seventh −6.9958 0.3200 1.544 56.114 2.280 S14 Lens 1.6934 0.1485 3.165S15 Filter Infinity 0.1100 2.850 S16 Infinity 0.7007 2.888 S17 ImagingInfinity −0.0200 3.276 Plane

TABLE 38 K A B C D E F G H J S1 −0.5383 0.0108 0.0209 −0.0477 0.0729−0.06 0.0243 −0.0027 −0.0007 0 S2 5.8135 −0.0459 0.0189 0.0248 −0.05590.0486 −0.026 0.0094 −0.0019 0 S3 −10.011 −0.085 0.066 0.02 −0.08080.0756 −0.0332 0.0069 −0.0006 0 S4 −0.1875 −0.0544 0.0068 0.26 −0.66550.9329 −0.7519 0.3313 −0.061 0 S5 0 −0.0569 0.0063 −0.0275 −0.00460.0401 −0.0485 0.0264 −0.0053 0 S6 0 −0.0775 −0.0976 0.271 −0.53290.5567 −0.3323 0.1128 −0.0176 0 S7 47.015 −0.0863 −0.1024 0.2298 −0.27210.1091 0.0392 −0.0378 0.0065 0 S8 −99 −0.0603 −0.0348 0.057 −0.04680.0241 −0.007 0.001 −6E−05 0 S9 −99 −0.2672 0.6153 −0.9745 0.9138−0.5236 0.1786 −0.0332 0.0026 0 S10 −0.0701 0.0268 −0.0377 −0.0253 0.035−0.0133 0.0024 −0.0002   7E−06 0 S11 −97.721 0.1556 −0.2109 0.1424−0.0678 0.02 −0.0033 0.0003 −1E−05 0 S12 −1.5998 0.2298 −0.1811 0.0905−0.0342 0.0088 −0.0014 0.0001 −4E−06 0 S13 4.8341 −0.1142 −0.0024 0.0306−0.013 0.0027 −0.0003   2E−05 −5E−07 0 S14 −1.0993 −0.2618 0.1449−0.0599 0.0171 −0.0032 0.0004 −3E−05   1E−06 −2E−08

Twentieth Example

FIG. 39 is a view illustrating a twentieth example of an optical imagingsystem, and FIG. 40 illustrates aberration curves of the optical imagingsystem of FIG. 39 .

An optical imaging system 20 includes a first lens 1020, a second lens2020, a third lens 3020, a fourth lens 4020, a fifth lens 5020, a sixthlens 6020, and a seventh lens 7020.

The first lens 1020 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2020 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3020 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4020 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5020 has a positive refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6020 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6020. The seventh lens 7020 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, no inflection point is formed on the object-side surface ofthe seventh lens 7020, and one inflection point is formed on theimage-side surface of the seventh lens 7020.

The optical imaging system 20 further includes a stop, a filter 8020,and an image sensor 9020. The stop is disposed between the first lens1020 and the second lens 2020 to adjust an amount of light incident ontothe image sensor 9020. The filter 8020 is disposed between the seventhlens 7020 and the image sensor 9020 to block infrared rays. The imagesensor 9020 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 39 , the stop is disposed at adistance of 0.641 mm from the object-side surface of the first lens 1020toward the imaging plane of the optical imaging system 20. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 20 listed in Table 59 that appears later in thisapplication.

Table 39 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 39 , and Table 40 belowshows aspherical coefficients of the lenses of FIG. 39 .

TABLE 39 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.7977 0.6409 1.544 56.114 1.270 S2 Lens 3.7422 0.1191 1.211 (Stop) S3Second 3.0573 0.2200 1.661 20.353 1.190 S4 Lens 2.7951 0.3931 1.130 S5Third 10.6215 0.4640 1.544 56.114 1.153 S6 Lens 9.0266 0.1000 1.289 S7Fourth 7.9876 0.3621 1.544 56.114 1.328 S8 Lens 138.7678 0.2334 1.454 S9Fifth −4.1765 0.2198 1.661 20.353 1.518 S10 Lens −4.1394 0.1000 1.656S11 Sixth 4.6134 0.6089 1.544 56.114 2.000 S12 Lens −3.5921 0.4726 2.038S13 Seventh −7.0016 0.3200 1.544 56.114 2.049 S14 Lens 1.6938 0.11072.685 S15 Filter Infinity 0.2100 2.942 S16 Infinity 0.5300 3.008 S17Imaging Infinity 0.0200 3.292 Plane

TABLE 40 K A B C D E F G H J S1 −0.812 0.0136 0.0311 −0.0769 0.1226−0.1099 0.0531 −0.0116 0.0005 0 S2 −6.6917 −0.0631 0.0174 0.0714 −0.16480.1763 −0.1086 0.0376 −0.0059 0 S3 −14.579 −0.0707 0.0068 0.1319 −0.21290.173 −0.0715 0.0127 −0.0005 0 S4 −0.188 −0.0614 −0.0138 0.3338 −0.73920.9251 −0.6781 0.276 −0.0477 0 S5 0 −0.0572 0.0435 −0.1733 0.2724−0.2421 0.0931 −0.0042 −0.0038 0 S6 0 −0.1356 −0.0309 0.2183 −0.55470.6931 −0.486 0.1856 −0.0304 0 S7 30.023 −0.2107 0.0007 0.1568 −0.28540.2586 −0.1154 0.0236 −0.0019 0 S8 −99 −0.1858 −0.0192 0.2616 −0.41110.3392 −0.1538 0.0357 −0.0033 0 S9 −98.995 −0.2935 0.5043 −0.5157 0.2657−0.0658 0.0056 0.0005 −8E−05 0 S10 −0.0701 −0.0775 0.2223 −0.2703 0.1529−0.0452 0.0073 −0.0006   2E−05 0 S11 −97.878 0.1479 −0.1956 0.1288−0.0598 0.0172 −0.0028 0.0002 −8E−06 0 S12 1.4166 0.1234 −0.1416 0.087−0.0341 0.0088 −0.0014 0.0001 −4E−06 0 S13 9.5503 −0.2864 0.1096 0.0149−0.0214 0.0064 −0.0009   6E−05 −2E−06 0 S14 −1.2786 −0.3076 0.1777−0.0626 0.0143 −0.0022 0.0002 −1E−05   5E−07 −7E−09

Twenty-First Example

FIG. 41 is a view illustrating a twenty-first example of an opticalimaging system, and FIG. 42 illustrates aberration curves of the opticalimaging system of FIG. 41 .

An optical imaging system 21 includes a first lens 1021, a second lens2021, a third lens 3021, a fourth lens 4021, a fifth lens 5021, a sixthlens 6021, and a seventh lens 7021.

The first lens 1021 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2021 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3021 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4021 has a positive refractive power, a convexobject-side surface, and a convex image-side surface. The fifth lens5021 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6021 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6021. The seventh lens 7021 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7021.

The optical imaging system 21 further includes a stop, a filter 8021,and an image sensor 9021. The stop is disposed between the second lens2021 and the third lens 3021 to adjust an amount of light incident ontothe image sensor 9021. The filter 8021 is disposed between the seventhlens 7021 and the image sensor 9021 to block infrared rays. The imagesensor 9021 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 41 , the stop is disposed at adistance of 0.920 mm from the object-side surface of the first lens 1021toward the imaging plane of the optical imaging system 21. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 21 listed in Table 59 that appears later in thisapplication.

Table 41 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 41 , and Table 42 belowshows aspherical coefficients of the lenses of FIG. 41 .

TABLE 41 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.6723 0.7383 1.547 56.114 1.350 S2 Lens 6.8570 0.0200 1.277 S3 Second2.1918 0.1620 1.660 20.400 1.154 S4 Lens 1.6162 0.3610 1.020 (Stop) S5Third 4.2114 0.1981 1.660 20.400 0.993 S6 Lens 3.7067 0.1568 1.063 S7Fourth 13.0598 0.4170 1.547 56.114 1.137 S8 Lens −10.8786 0.3033 1.259S9 Fifth −7.2645 0.2508 1.650 21.494 1.350 S10 Lens −20.0451 0.12101.730 S11 Sixth 6.6528 0.8628 1.650 21.494 1.734 S12 Lens 6.2317 0.14082.304 S13 Seventh 2.1121 0.6671 1.537 55.711 3.101 S14 Lens 1.54600.1957 2.902 S15 Filter Infinity 0.1200 3.189 S16 Infinity 0.5150 3.230S17 Imaging Infinity 0.0150 3.542 Plane

TABLE 42 K A B C D E F G H J S1 −0.0875 0.0043 0.0051 −0.0107 0.0157−0.0116 0.0042 −0.0006 0 0 S2 25.239 −0.0649 0.2073 −0.4137 0.472−0.3196 0.119 −0.019 0 0 S3 −1.7461 −0.1041 0.3118 −0.5508 0.6169−0.4129 0.1566 −0.0264 0 0 S4 −0.0238 −0.0685 0.11 −0.0081 −0.21370.4018 −0.2921 0.0875 0 0 S5 0.8405 −0.0823 0.0538 −0.0046 −0.07650.1601 −0.1299 0.0421 0 0 S6 6.608 −0.1086 0.0588 −0.0507 0.048 −0.01680.001 0.0003 0 0 S7 21.918 −0.0385 −0.0011 0.0112 −0.0177 0.0301 −0.01630.0027 0 0 S8 25.736 −0.0248 −0.0082 −0.0047 0.0083 −0.0029 0.0004−2E−05 0 0 S9 1.6857 −0.0267 0.0322 −0.1034 0.0865 −0.0378 0.0096−0.0012 0 0 S10 69.409 −0.0298 0.003 −0.0334 0.0256 −0.0076 0.001 −5E−050 0 S11 −52.836 0.0057 −0.0573 0.0402 −0.0183 0.0046 −0.0006   3E−05 0 0S12 −34.09 −0.0239 −0.0095 0.0073 −0.0028 0.0006 −6E−05   3E−06 0 0 S13−0.9427 −0.2417 0.0607 −0.0015 −0.0024 0.0006 −7E−05   4E−06 −8E−08 0S14 −1.0048 −0.2102 0.0796 −0.0236 0.0052 −0.0008   7E−05 −3E−06   7E−080

Twenty-Second Example

FIG. 43 is a view illustrating a twenty-second example of an opticalimaging system, and FIG. 44 illustrates aberration curves of the opticalimaging system of FIG. 43 .

An optical imaging system 22 includes a first lens 1022, a second lens2022, a third lens 3022, a fourth lens 4022, a fifth lens 5022, a sixthlens 6022, and a seventh lens 7022.

The first lens 1022 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2022 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3022 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4022 has a positive refractive power, a convexobject-side surface, and a convex image-side surface. The fifth lens5022 has a negative refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6022 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6022. The seventh lens 7022 has a negative refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7022, and one inflection point is formed on theimage-side surface of the seventh lens 7022.

The optical imaging system 22 further includes a stop, a filter 8022,and an image sensor 9022. The stop is disposed between the first lens1022 and the second lens 2022 to adjust an amount of light incident ontothe image sensor 9022. The filter 8022 is disposed between the seventhlens 7022 and the image sensor 9022 to block infrared rays. The imagesensor 9022 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 43 , the stop is disposed at adistance of 0.901 mm from the object-side surface of the first lens 1022toward the imaging plane of the optical imaging system 22. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 22 listed in Table 59 that appears later in thisapplication.

Table 43 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 43 , and Table 44 belowshows aspherical coefficients of the lenses of FIG. 43 .

TABLE 43 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.8494 0.6370 1.547 56.114 1.390 S2 Lens 7.5507 0.0250 1.354 S3 Second2.5063 0.2400 1.660 20.400 1.268 S4 Lens 1.7762 0.4546 1.120 (Stop) S5Third 4.0806 0.1300 1.660 20.400 1.092 S6 Lens 3.9645 0.2866 1.129 S7Fourth 12.4947 0.7725 1.547 56.114 1.335 S8 Lens −21.8846 0.4726 1.572S9 Fifth −10.1915 0.2163 1.650 21.494 1.687 S10 Lens −23.7853 0.09431.903 S11 Sixth 6.4332 0.7822 1.650 21.494 2.098 S12 Lens 6.0490 0.25422.601 S13 Seventh 2.2224 0.6031 1.537 55.711 3.411 S14 Lens 1.61130.2500 3.363 S15 Filter Infinity 0.1100 3.617 S16 Infinity 0.5075 3.653S17 Imaging Infinity 0.0150 3.936 Plane

TABLE 44 K A B C D E F G H J S1 −0.0815 0.0055 0.0014 −0.0029 0.0061−0.0051 0.002 −0.0003 0 0 S2 25.622 −0.0509 0.133 −0.2101 0.1935 −0.10780.0334 −0.0045 0 0 S3 −1.7225 −0.0688 0.1585 −0.2156 0.1892 −0.10090.0303 −0.004 0 0 S4 0.011 −0.0397 0.0365 0.0313 −0.0936 0.1109 −0.05950.0137 0 0 S5 0.49 −0.0743 0.0501 −0.0466 0.0606 −0.0386 0.013 −0.0015 00 S6 7.0482 −0.0885 0.0384 −0.0259 0.0308 −0.0159 0.0036 −0.0003 0 0 S721.918 −0.0229 0.0042 −0.0033 0.0044 −0.0002 −0.0006 0.0001 0 0 S825.736 −0.0244 0.007 −0.0107 0.0065 −0.0016 0.0002 −7E−06 0 0 S9 1.6857−0.0527 0.078 −0.0871 0.0455 −0.0137 0.0025 −0.0002 0 0 S10 76.281−0.0552 0.0643 −0.0583 0.0243 −0.005 0.0005 −2E−05 0 0 S11 −52.8360.0115 −0.0347 0.0203 −0.0087 0.0021 −0.0002   1E−05 0 0 S12 0 −0.0339−0.0007 0.0021 −0.0008 8E−05   1E−05 −4E−06   3E−07 −9E−09 S13 −0.9427−0.1816 0.0377 −0.0008 −0.001 0.0002 −2E−05   9E−07 −2E−08 0 S14 −1.0048−0.1579 0.0494 −0.0121 0.0022 −0.0003   2E−05 −8E−07   1E−08 0

Twenty-Third Example

FIG. 45 is a view illustrating a twenty-third example of an opticalimaging system, and FIG. 46 illustrates aberration curves of the opticalimaging system of FIG. 45 .

An optical imaging system 23 includes a first lens 1023, a second lens2023, a third lens 3023, a fourth lens 4023, a fifth lens 5023, a sixthlens 6023, and a seventh lens 7023.

The first lens 1023 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2023 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3023 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4023 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5023 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6023 has a positiverefractive power, a convex object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6023. The seventh lens 7023 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, one inflection point is formed on each of the object-sidesurface and the image-side surface of the seventh lens 7023.

The optical imaging system 23 further includes a stop, a filter 8023,and an image sensor 9023. The stop is disposed between the first lens1023 and the second lens 2023 to adjust an amount of light incident ontothe image sensor 9023. The filter 8023 is disposed between the seventhlens 7023 and the image sensor 9023 to block infrared rays. The imagesensor 9023 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 45 , the stop is disposed at adistance of 1.051 mm from the object-side surface of the first lens 1023toward the imaging plane of the optical imaging system 23. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 23 listed in Table 59 that appears later in thisapplication.

Table 45 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 45 , and Table 46 belowshows aspherical coefficients of the lenses of FIG. 45 .

TABLE 45 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.8221 0.5822 1.544 56.114 1.275 S2 Lens 4.8276 0.0564 1.231 S3 Second4.5461 0.3826 1.544 56.114 1.199 S4 Lens 15.5127 0.0300 1.152 S5 Third3.9113 0.2000 1.661 20.350 1.086 (Stop) Lens S6 2.2301 0.3911 1.050 S7Fourth 14.8039 0.3510 1.544 56.114 1.050 S8 Lens 6.0045 0.0516 1.178 S9Fifth 4.0426 0.2943 1.639 21.525 1.235 S10 Lens 6.0069 0.3029 1.433 S11Sixth 50.3009 0.5717 1.544 56.114 1.650 S12 Lens −1.4551 0.3562 2.029S13 Seventh −3.9227 0.3400 1.544 56.114 2.473 S14 Lens 1.8149 0.18002.629 S15 Filter Infinity 0.2100 1.518 64.197 S16 Infinity 0.6200 S17Imaging Infinity 0.0200 Plane

TABLE 46 K A B C D E F G H S1 −1.7971 0.02 0.0153 −0.0575 0.0794 −0.06890.0296 −0.0048 0 S2 0 −0.0249 −0.1102 0.1727 −0.1632 0.1101 −0.04410.0076 0 S3 0 0.0215 −0.1293 0.2068 −0.2278 0.2 −0.1022 0.0204 0 S472.117 −0.0714 0.2664 −0.6184 0.7522 −0.5313 0.203 −0.0324 0 S5 −15.337−0.2046 0.4728 −0.8108 0.9542 −0.6926 0.2852 −0.0496 0 S6 −5.3786 −0.1020.2031 −0.1151 −0.1096 0.3352 −0.285 0.0916 0 S7 0 −0.0443 −0.0061−0.1088 0.0952 −0.0067 −0.0694 0.0382 0 S8 0 −0.1919 0.079 0.0071−0.1552 0.1775 −0.0954 0.0212 0 S9 −54.709 −0.2046 −0.0908 0.3474−0.3213 0.1526 −0.0388 0.0033 0 S10 0 −0.1486 −0.156 0.3054 −0.22980.1087 −0.0342 0.0052 0 S11 0 0.0817 −0.1186 −0.0496 0.1291 −0.08350.0241 −0.0026 0 S12 −1.7559 0.2122 −0.171 0.0184 0.0388 −0.0196 0.0037−0.0003 0 S13 −4.6993 0.0063 −0.2121 0.1837 −0.071 0.0154 −0.0019 0.0001−4E−06 S14 −1.1263 −0.2142 0.0916 −0.0298 0.0072 −0.0012 0.0001 −9E−06  3E−07

Twenty-Fourth Example

FIG. 47 is a view illustrating a twenty-fourth example of an opticalimaging system, and FIG. 48 illustrates aberration curves of the opticalimaging system of FIG. 47 .

An optical imaging system 24 includes a first lens 1024, a second lens2024, a third lens 3024, a fourth lens 4024, a fifth lens 5024, a sixthlens 6024, and a seventh lens 7024.

The first lens 1024 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2024 has a positive refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3024 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4024 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5024 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6024 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on theobject-side surface and the image-side surface of the sixth lens 6024.The seventh lens 7024 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. In addition, twoinflection points are formed on the object-side surface of the seventhlens 7024, and one inflection point is formed on the image-side surfaceof the seventh lens 7024.

The optical imaging system 24 further includes a stop, a filter 8024,and an image sensor 9024. The stop is disposed between the second lens2024 and the third lens 3024 to adjust an amount of light incident ontothe image sensor 9024. The filter 8024 is disposed between the seventhlens 7024 and the image sensor 9024 to block infrared rays. The imagesensor 9024 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 47 , the stop is disposed at adistance of 1.128 mm from the object-side surface of the first lens 1024toward the imaging plane of the optical imaging system 24. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 24 listed in Table 59 that appears later in thisapplication.

Table 47 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 47 , and Table 48 belowshows aspherical coefficients of the lenses of FIG. 47 .

TABLE 47 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First2.1378 0.4606 1.546 56.114 1.360 S2 Lens 2.7210 0.0424 1.346 S3 Second2.7717 0.6000 1.546 56.114 1.322 S4 Lens 33.8379 0.0250 1.253 S5 Third5.9058 0.2300 1.679 19.236 1.199 (Stop) Lens S6 2.9580 0.3150 1.193 S7Fourth 6.7061 0.5156 1.546 56.114 1.246 S8 Lens 15.6197 0.4883 1.350 S9Fifth 9.4476 0.3912 1.679 19.236 1.600 S10 Lens 5.2667 0.1323 2.100 S11Sixth 2.4900 0.4534 1.546 56.114 1.951 S12 Lens 2.6058 0.1501 2.440 S13Seventh 1.4290 0.5074 1.546 56.114 2.691 S14 Lens 1.2861 0.4042 2.841S15 Filter Infinity 0.2100 1.518 64.197 3.245 S16 Infinity 0.6767 3.316S17 Imaging Infinity 0.0150 3.733 Plane

TABLE 48 K A B C D E F G H J S1 −0.9855 −0.0214 0.0439 −0.0925 0.06330.0064 −0.0479 0.0372 −0.0126 0.0016 S2 −12.849 0.0234 −0.0441 −0.1546−0.0352 0.7096 −1.0004 0.6322 −0.1959 0.0242 S3 −1.1002 −0.0276 0.0854−0.4269 0.4011 0.3152 −0.8128 0.5995 −0.2021 0.0266 S4 −7.367 −0.16841.4677 −5.7804 12.64 −16.742 13.734 −6.8183 1.8769 −0.22 S5 9.3187−0.2245 1.5162 −5.8569 13.059 −17.823 15.121 −7.7778 2.2231 −0.2714 S61.6265 −0.0856 0.2704 −0.9806 2.415 −3.7649 3.6777 −2.1905 0.7327−0.1058 S7 −4.7815 0.0264 −0.5178 1.9131 −4.2532 5.8667 −5.0521 2.6239−0.7455 0.0886 S8 5.8592 −0.0338 −0.0317 0.0097 0.0291 −0.0644 0.0612−0.0311 0.0084 −0.0008 S9 −43.521 −0.002 −0.0021 0.0436 −0.1236 0.1389−0.0871 0.0311 −0.0059 0.0005 S10 −12.729 −0.0608 0.0286 0.0052 −0.02440.0182 −0.0074 0.0018 −0.0002   1E−05 S11 −16.199 0.1227 −0.2762 0.2845−0.2154 0.1043 −0.0311 0.0056 −0.0006   2E−05 S12 0.0242 −0.0902 0.058−0.0568 0.029 −0.0088 0.0017 −0.0002 2E−05 −5E−07 S13 −0.8394 −0.41140.2062 −0.0647 0.0137 −0.0021 0.0003 −2E−05 2E−06 −5E−08 S14 −1.3743−0.2983 0.1734 −0.0777 0.0258 −0.006 0.0009 −9E−05 5E−06 −1E−07

Twenty-Fifth Example

FIG. 49 is a view illustrating a twenty-fifth example of an opticalimaging system, and FIG. 50 illustrates aberration curves of the opticalimaging system of FIG. 49 .

An optical imaging system 25 includes a first lens 1025, a second lens2025, a third lens 3025, a fourth lens 4025, a fifth lens 5025, a sixthlens 6025, and a seventh lens 7025.

The first lens 1025 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2025 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3025 has a negativerefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4025 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5025 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6025 has a negativerefractive power, a concave object-side surface, and a concaveimage-side surface. In addition, at least one inflection point is formedon either one or both of the object-side surface and the image-sidesurface of the sixth lens 6025. The seventh lens 7025 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, one inflection point is formed on each of theobject-side surface and the image-side surface of the seventh lens 7025.

The optical imaging system 25 further includes a stop, a filter 8025,and an image sensor 9025. The stop is disposed between the second lens2025 and the third lens 3025 to adjust an amount of light incident ontothe image sensor 9025. The filter 8025 is disposed between the seventhlens 7025 and the image sensor 9025 to block infrared rays. The imagesensor 9025 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 49 , the stop is disposed at adistance of 0.963 mm from the object-side surface of the first lens 1025toward the imaging plane of the optical imaging system 25. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 25 listed in Table 59 that appears later in thisapplication.

Table 49 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 49 , and Table 50 belowshows aspherical coefficients of the lenses of FIG. 49 .

TABLE 49 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.7493 0.7080 1.546 56.114 1.280 S2 Lens 7.7627 0.0250 1.225 S3 Second3.6883 0.2300 1.667 20.353 1.160 S4 Lens 2.4524 0.3551 1.033 (Stop) S5Third 39.9140 0.2300 1.667 20.353 1.053 S6 Lens 22.4233 0.0250 1.090 S7Fourth 6.6877 0.3582 1.546 56.114 1.130 S8 Lens 17.1426 0.3932 1.201 S9Fifth 10.0343 0.3525 1.656 21.525 1.329 S10 Lens 6.5555 0.2520 1.664 S11Sixth −324.8644 0.6107 1.656 21.525 1.841 S12 Lens 12.2860 0.0342 2.288S13 Seventh 1.9518 0.8257 1.536 55.656 2.578 S14 Lens 1.7567 0.21872.963 S15 Filter Infinity 0.2100 1.518 64.197 3.258 S16 Infinity 0.63503.334 S17 Imaging Infinity 0.0150 3.729 Plane

TABLE 50 K A B C D E F G H J S1 −0.2398 5E−05 0.0225 −0.0553 0.0791−0.0725 0.0408 −0.0137 0.0019 0 S2 6.0424 −0.0363 0.0343 0.0144 −0.11240.1667 −0.1307 0.054 −0.0092 0 S3 −1.7137 −0.0472 0.041 0.0264 −0.1160.1895 −0.1701 0.0827 −0.0161 0 S4 −0.2358 −0.0167 −0.01 0.0564 −0.0195−0.1069 0.2279 −0.1897 0.0625 0 S5 −0.0716 −0.0169 −0.0047 −0.18920.6295 −1.0256 0.9612 −0.4977 0.1127 0 S6 −1.1573 0.0199 −0.1372 0.1444−0.0555 0.1408 −0.2746 0.2067 −0.0539 0 S7 −28.459 0.0213 −0.1017 0.06110.0456 0.018 −0.1503 0.1307 −0.0346 0 S8 −2.3038 −0.0386 0.0394 −0.12060.2443 −0.4112 0.4746 −0.3301 0.1229 −0.018207 S9 −3.3254 −0.1025 0.044−0.1067 0.238 −0.3262 0.2409 −0.0929 0.0146 0 S10 −25.215 −0.0274−0.1331 0.1909 −0.1562 0.0771 −0.0231 0.0041 −0.0003 0 S11 23.202 0.1679−0.2882 0.2414 −0.1422 0.0533 −0.0119 0.0015 −8E−05 0 S12 −49.948 0.0068−0.0175 0.0027 0.0001 −0.0001 4E−05 −6E−06   4E−07 0 S13 −1.9292 −0.26140.126 −0.0405 0.0094 −0.0015 0.0002 −9E−06   2E−07 0 S14 −0.8288 −0.17370.0652 −0.0206 0.0046 −0.0007 6E−05 −3E−06   7E−08 0

Twenty-Sixth Example

FIG. 51 is a view illustrating a twenty-sixth example of an opticalimaging system, and FIG. 52 illustrates aberration curves of the opticalimaging system of FIG. 51 .

An optical imaging system 26 includes a first lens 1026, a second lens2026, a third lens 3026, a fourth lens 4026, a fifth lens 5026, a sixthlens 6026, and a seventh lens 7026.

The first lens 1026 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2026 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3026 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. The fourth lens 4026 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5026 has a positive refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6026 has a positiverefractive power, a concave object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6026. The seventh lens 7026 has a negative refractive power,a concave object-side surface, and a concave image-side surface. Inaddition, no inflection point is formed on the object-side surface ofthe seventh lens 7026, and one inflection point is formed on theimage-side surface of the seventh lens 7026.

The optical imaging system 26 further includes a stop, a filter 8026,and an image sensor 9026. The stop is disposed between the first lens1026 and the second lens 2026 to adjust an amount of light incident ontothe image sensor 9026. The filter 8026 is disposed between the seventhlens 7026 and the image sensor 9026 to block infrared rays. The imagesensor 9026 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 51 , the stop is disposed at adistance of 0.857 mm from the object-side surface of the first lens 1026toward the imaging plane of the optical imaging system 26. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 26 listed in Table 59 that appears later in thisapplication.

Table 51 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 51 , and Table 52 belowshows aspherical coefficients of the lenses of FIG. 51 .

TABLE 51 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.8263 0.7034 1.546 56.114 1.290 S2 Lens 7.7056 0.1540 1.215 S3 Second4.6213 0.2200 1.679 19.236 1.127 (Stop) Lens S4 2.7291 0.3146 1.109 S5Third 6.6824 0.4391 1.546 56.114 1.151 S6 Lens 11.7185 0.1811 1.250 S7Fourth 6.8604 0.2500 1.679 19.236 1.259 S8 Lens 7.4620 0.4065 1.408 S9Fifth −9.8497 0.5939 1.546 56.114 1.604 S10 Lens −1.8870 0.0250 1.970S11 Sixth −41.8807 0.3701 1.546 56.114 2.299 S12 Lens −3.7454 0.25692.568 S13 Seventh −2.0634 0.3200 1.546 56.114 2.855 S14 Lens 2.61160.1554 3.055 S15 Filter Infinity 0.2100 1.518 64.197 3.346 S16 Infinity0.6400 3.410 S17 Imaging Infinity 0.0100 3.730 Plane

TABLE 52 K A B C D E F G H J S1 −1.0945 0.0136 0.0506 −0.1839 0.416−0.5839 0.51 −0.2705 0.0795081 −0.009965 S2 3.251 −0.0482 0.0508 −0.0850.2198 −0.436 0.5133 −0.3477 0.1257908 −0.01888 S3 −13.699 −0.11550.1942 −0.4376 1.335 −2.7707 3.4839 −2.5718 1.0289235 −0.172343 S4−4.0179 −0.0945 0.2406 −0.7546 2.4023 −4.9111 6.1463 −4.5679 1.8551655−0.316824 S5 −6.6783 −0.0675 0.1229 −0.5308 1.3347 −2.1668 2.2329−1.4059 0.4923477 −0.072919 S6 2.6687 −0.1089 0.0811 −0.1248 0.01660.1977 −0.3307 0.2573 −0.101655 0.0161788 S7 7.0258 −0.2027 0.0564−0.0521 0.0446 −0.0418 0.0403 −0.0212 0.0010102 0.0016206 S8 −10.8−0.1484 0.0297 −0.0692 0.1666 −0.2292 0.2033 −0.1109 0.0326486 −0.003833S9 −26.465 0.0072 −0.0015 −0.1473 0.2748 −0.3047 0.2171 −0.09390.0218783 −0.002079 S10 −1.4915 0.1141 −0.2124 0.1883 −0.1127 0.0475−0.0129 0.0021 −0.000178 6.324E−06 S11 −6.8308 0.0507 −0.1087 0.0643−0.0416 0.0215 −0.0064 0.0011 −8.99E−05 3.109E−06 S12 −10.262 0.05440.062 −0.1082 0.0705 −0.0254 0.0054 −0.0007 4.337E−05 −1.18E−06 S13−6.0066 0.0037 −0.0456 0.0731 −0.0405 0.0115 −0.0019 0.0002  −9.4E−062.077E−07 S14 −0.8095 −0.1128 0.0401 −0.0105 0.0011 0.0002 −7E−05 8E−06−4.78E−07 1.015E−08

Twenty-Seventh Example

FIG. 53 is a view illustrating a twenty-seventh example of an opticalimaging system, and FIG. 54 illustrates aberration curves of the opticalimaging system of FIG. 53 .

An optical imaging system 27 includes a first lens 1027, a second lens2027, a third lens 3027, a fourth lens 4027, a fifth lens 5027, a sixthlens 6027, and a seventh lens 7027.

The first lens 1027 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2027 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3027 has a positiverefractive power, a concave object-side surface, and a convex image-sidesurface. The fourth lens 4027 has a negative refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5027 has a positive refractive power, a concave object-side surface, anda convex image-side surface. The sixth lens 6027 has a positiverefractive power, a concave object-side surface, and a convex image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface, and the image-side surface ofthe sixth lens 6027. The seventh lens 7027 has a negative refractivepower, a concave object-side surface, and a concave image-side surface.In addition, no inflection point is formed on the object-side surface ofthe seventh lens 7027, and one inflection point is formed on theimage-side surface of the seventh lens 7027.

The optical imaging system 27 further includes a stop, a filter 8027,and an image sensor 9027. The stop is disposed between the second lens2027 and the third lens 3027 to adjust an amount of light incident ontothe image sensor 9027. The filter 8027 is disposed between the seventhlens 7027 and the image sensor 9027 to block infrared rays. The imagesensor 9027 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 53 , the stop is disposed at adistance of 0.872 mm from the object-side surface of the first lens 1027toward the imaging plane of the optical imaging system 27. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 27 listed in Table 59 that appears later in thisapplication.

Table 53 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 53 , and Table 54 belowshows aspherical coefficients of the lenses of FIG. 53 .

TABLE 53 Sur- Index of Effective face Radius of Thickness/ Refrac- AbbeAperture No. Element Curvature Distance tion Number Radius S1 First1.7603 0.6172 1.546 56.114 1.100 S2 Lens 14.1233 0.0250 1.040 S3 Second5.8341 0.2300 1.667 20.353 1.011 S4 Lens 3.1227 0.3733 0.919 S5 Third−49.9417 0.3799 1.546 56.114 0.995 (Stop) Lens S6 −15.1870 0.1809 1.096S7 Fourth 23.3680 0.3032 1.667 20.353 1.124 S8 Lens 12.2098 0.3354 1.309S9 Fifth −4.3948 0.4729 1.546 56.114 1.471 S10 Lens −1.5983 0.0250 1.698S11 Sixth −6.0815 0.5447 1.546 56.114 1.822 S12 Lens −3.0145 0.27242.192 S13 Seventh −6.1494 0.4224 1.546 56.114 2.462 S14 Lens 1.63670.1933 2.880 S15 Filter Infinity 0.2100 1.518 64.197 3.223 S16 Infinity0.6445 3.300 S17 Imaging Infinity 0.0099 3.728 Plane

TABLE 54 K A B C D E F G H J S1 −1.0054 0.0225 0.0222 −0.0696 0.1604−0.2238 0.1806 −0.079105 0.0141246 0 S2 −1.5097 −0.1275 0.3975 −0.69820.6801 −0.322 0.0288 0.029035 −0.007638 0 S3 6.0294 −0.163 0.4504−0.8514 1.0525 −0.8203 0.4235 −0.137998 0.0212967 0 S4 −0.8846 −0.04490.0393 0.1574 −0.6934 1.3171 −1.3069 0.6799499 −0.143027 0 S5 0 −0.0513−0.0193 −0.016 0.0043 0.0034 −0.0155 0.0319206 −0.012784 0 S6 0 −0.1089−0.0569 0.3576 −0.9255 1.1947 −0.8604 0.3322147 −0.054677 0 S7 −7.5−0.2139 −0.0107 0.1788 −0.1827 −0.1159 0.3046 −0.189687 0.0404863 0 S8−43.341 −0.1402 −0.061 0.2777 −0.4123 0.3523 −0.1857 0.0564073 −0.0071060 S9 −35.081 −0.0602 0.0736 −0.1046 0.1084 −0.0726 0.0255 −0.0041030.0002198 0 S10 −1.5734 0.1621 −0.2197 0.1896 −0.107 0.0396 −0.00910.0011297 −5.79E−05 0 S11 0.5153 0.2137 −0.3167 0.2399 −0.1217 0.0384−0.0069 0.0006554  −2.5E−05 0 S12 −1.1466 0.1967 −0.2565 0.1542 −0.05320.0115 −0.0015 0.0001175 −3.88E−06 0 S13 −0.9056 −0.0077 −0.2094 0.1883−0.0749 0.0167 −0.0022 0.000155  −4.7E−06 0 S14 −1.2797 −0.2192 0.1006−0.0338 0.0088 −0.0018 0.0003 −2.44E−05 1.336E−06 −3.17E−08

Twenty-Eighth Example

FIG. 55 is a view illustrating a twenty-eighth example of an opticalimaging system, and FIG. 56 illustrates aberration curves of the opticalimaging system of FIG. 55 .

An optical imaging system 28 includes a first lens 1028, a second lens2028, a third lens 3028, a fourth lens 4028, a fifth lens 5028, a sixthlens 6028, and a seventh lens 7028.

The first lens 1028 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2028 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3028 has a positiverefractive power, a concave object-side surface, and a convex image-sidesurface. The fourth lens 4028 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5028 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6028 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6028. The seventh lens 7028 has a positive refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7028, and one inflection point is formed on theimage-side surface of the seventh lens 7028.

The optical imaging system 28 further includes a stop, a filter 8028,and an image sensor 9028. The stop is disposed between the second lens2028 and the third lens 3028 to adjust an amount of light incident ontothe image sensor 9028. The filter 8028 is disposed between the seventhlens 7028 and the image sensor 9028 to block infrared rays. The imagesensor 9028 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 55 , the stop is disposed at adistance of 0.866 mm from the object-side surface of the first lens 1028toward the imaging plane of the optical imaging system 28. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 28 listed in Table 59 that appears later in thisapplication.

Table 55 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 55 , and Table 56 belowshows aspherical coefficients of the lenses of FIG. 55 .

TABLE 55 Thick- Effective Surface Radius of ness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 1.8830 0.5872 1.546 56.114 1.050 S2 Lens 18.0733  0.0492 0.962 S3 Second4.5995  0.2300 1.667 20.353 0.934 S4 Lens 2.5464  0.3929 0.837 (Stop)  S5 Third −21.7546  0.2745 1.546 56.114 1.100 S6 Lens −13.5144  0.06111.106 S7 Fourth 25.3349  0.2655 1.546 56.114 1.200 S8 Lens 25.3360 0.3710 1.285 S9 Fifth 9.4682  0.3930 1.656 21.525 1.500 S10 Lens 5.1029 0.3790 1.754 S11 Sixth 6.4162  0.8885 1.546 56.114 2.041 S12 Lens6.3521  0.0460 2.631 S13 Seventh 1.9665  0.8854 1.536 55.656 3.050 S14Lens 1.7699  0.3098 3.456 S15 Filter Infinity  0.2100 1.518 64.197 3.768S16 Infinity  0.6537 3.829 S17 Imaging Infinity −0.0037 4.129 Plane

TABLE 56 K A B C D E F G H J S1 −0.1525 0.0035 0.0054 −0.0238 0.0587−0.0925 0.0808 −0.0376 0.0069 0 S2 −36.188 −0.0554 0.191 −0.4954 0.9092−1.1194 0.849 −0.3546 0.0617 0 S3 −0.1164 −0.0883 0.2264 −0.5273 0.9947−1.274 1.0104 −0.4343 0.076 0 S4 0.3326 −0.0462 0.097 −0.2316 0.5455−0.848 0.7854 −0.3759 0.0708 0 S5 51.758 −0.0119 −0.0911 0.3617 −0.90671.3845 −1.3014 0.6835 −0.1493 0 S6 42.164 0.0924 −0.5269 1.3558 −2.25842.5093 −1.8107 0.7611 −0.139 0 S7 −4.7579 0.1336 −0.5938 1.261 −1.81151.7924 −1.1666 0.4427 −0.0728 0 S8 −3.4393 0.0471 −0.1842 0.2886 −0.35750.3273 −0.1971 0.067 −0.0093 0 S9 −8.5449 −0.0502 −0.0588 0.1599 −0.20270.1398 −0.0542 0.0105 −0.0007 0 S10 −18.064 −0.044 −0.0734 0.1425−0.1303 0.0691 −0.0217 0.0038 −0.0003 0 S11 −4.6497 0.0633 −0.11930.0882 −0.0426 0.0135 −0.0028 0.0004 −2E−05 0 S12 −50 0.034 −0.04970.0246 −0.0072 0.0013 −0.0001 7E−06 −2E−07 0 S13 −2.4291 −0.1201 0.01670.0022 −0.0009 0.0001 −6E−06 1E−07  9E−10 0 S14 −1.0032 −0.1111 0.0248−0.0032 −0.0001 0.0001 −2E−05 2E−06 −8E−08 1E−09

Twenty-Ninth Example

FIG. 57 is a view illustrating a twenty-ninth example of an opticalimaging system, and FIG. 58 illustrates aberration curves of the opticalimaging system of FIG. 57 .

An optical imaging system 29 includes a first lens 1029, a second lens2029, a third lens 3029, a fourth lens 4029, a fifth lens 5029, a sixthlens 6029, and a seventh lens 7029.

The first lens 1029 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The second lens2029 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The third lens 3029 has a positiverefractive power, a concave object-side surface, and a convex image-sidesurface. The fourth lens 4029 has a positive refractive power, a convexobject-side surface, and a concave image-side surface. The fifth lens5029 has a negative refractive power, a convex object-side surface, anda concave image-side surface. The sixth lens 6029 has a positiverefractive power, a convex object-side surface, and a concave image-sidesurface. In addition, at least one inflection point is formed on eitherone or both of the object-side surface and the image-side surface of thesixth lens 6029. The seventh lens 7029 has a positive refractive power,a convex object-side surface, and a concave image-side surface. Inaddition, two inflection points are formed on the object-side surface ofthe seventh lens 7029, and one inflection point is formed on theimage-side surface of the seventh lens 7029.

The optical imaging system 29 further includes a stop, a filter 8029,and an image sensor 9029. The stop is disposed between the second lens2029 and the third lens 3029 to adjust an amount of light incident ontothe image sensor 9029. The filter 8029 is disposed between the seventhlens 7029 and the image sensor 9029 to block infrared rays. The imagesensor 9029 forms an imaging plane on which an image of the subject isformed. Although not illustrated in FIG. 57 , the stop is disposed at adistance of 0.904 mm from the object-side surface of the first lens 1029toward the imaging plane of the optical imaging system 29. This distanceis equal to TTL-SL and can be calculated from the values of TTL and SLfor Example 29 listed in Table 59 that appears later in thisapplication.

Table 57 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 57 , and Table 58 belowshows aspherical coefficients of the lenses of FIG. 57 .

TABLE 57 Thick- Effective Surface Radius of ness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 1.89870.6486 1.546 56.114 1.260 S2 Lens 7.3568 0.0250 1.216 S3 Second 3.87890.2300 1.667 20.353 1.161 S4 Lens 2.7620 0.3408 1.053 (Stop) S5 Third−50.1242 0.2819 1.546 56.114 1.120 S6 Lens −14.9889 0.0597 1.158 S7Fourth 12.0498 0.2698 1.546 56.114 1.220 S8 Lens 12.5657 0.2919 1.320 S9Fifth 9.5926 0.3500 1.667 20.353 1.520 S10 Lens 5.2748 0.3344 1.762 S11Sixth 6.8735 0.8484 1.546 56.114 2.052 S12 Lens 7.4933 0.0591 2.641 S13Seventh 2.0337 0.8836 1.536 55.656 3.070 S14 Lens 1.8436 0.3048 3.425S15 Filter Infinity 0.2100 1.518 64.197 3.764 S16 Infinity 0.6441 3.825S17 Imaging Infinity 0.0150 4.134 Plane

TABLE 58 K A B C D E F G H J S1 −0.1061 −0.0082 0.0469 −0.0925 0.0811−0.0129 −0.032 0.0224 −0.0047 0 S2 −36.188 −0.0502 0.1624 −0.4029 0.6931−0.7643 0.5021 −0.1789 0.0264 0 S3 0.0036 −0.0795 0.2057 −0.548 1.0742−1.291 0.9097 −0.3412 0.052 0 S4 0.4038 −0.0325 0.0884 −0.3009 0.7004−0.9194 0.6738 −0.2424 0.0308 0 S5 51.758 0.0055 −0.1746 0.5018 −0.93951.1442 −0.9144 0.4407 −0.0937 0 S6 42.164 0.0953 −0.4992 1.0397 −1.22840.8169 −0.2802 0.0384  4E−06 0 S7 −4.7579 0.1185 −0.4938 0.8554 −0.86430.5167 −0.185 0.0417 −0.0054 0 S8 −3.4393 0.0492 −0.194 0.3147 −0.37730.3249 −0.1878 0.063 −0.0088 0 S9 −8.5449 −0.0638 0.0289 −0.0884 0.1649−0.171 0.0983 −0.0306 0.0041 0 S10 −18.064 −0.0543 −0.0172 0.0321−0.0179 0.004  5E−06 −0.0001  8E−06 0 S11 −4.6497 0.0535 −0.0909 0.0613−0.0311 0.011 −0.0026 0.0004 −2E−05 0 S12 −50 0.0103 −0.0176 0.0057−0.0015 0.0003 −4E−05  2E−06 −6E−08 0 S13 −2.606 −0.1177 0.0192 −0.0004−1E−04 −1E−05  4E−06 −4E−07  9E−09 0 S14 −1.0102 −0.0979 0.0187 −0.00240.0001  2E−05 −6E−06  6E−07 −3E−08 6E−10

Table 59 below shows an overall focal length f of the optical imagingsystem, an overall length TTL of the optical imaging system (a distancefrom the object-side surface of the first lens to the imaging plane), adistance SL from the stop to the imaging plane, an f-number (F No.) ofthe optical imaging system (the overall focal length f of the opticalimaging system divided by the diameter of an entrance pupil of theoptical imaging system, where both f and the diameter of the entrancepupil are expressed in mm), an image height (IMG HT) on the imagingplane (one-half of a diagonal length of the imaging plane), and a fieldof view (FOV) of the optical imaging system for each of Examples 1-29described herein. The values of f, TTL, SL, and IMG HT are expressed inmm. The values of F No. are dimensionless values. The values of FOV areexpressed in degrees.

TABLE 59 Example f TTL SL F No. IMG HT FOV 1 4.315 5.290 4.472 1.5603.552 77.300 2 4.350 5.300 4.481 1.570 3.552 76.800 3 4.255 5.190 3.9211.573 3.700 80.420 4 4.256 5.190 3.931 1.581 3.680 80.218 5 3.950 4.8193.650 1.581 3.250 77.470 6 4.350 5.300 4.917 1.580 3.384 79.580 7 4.8455.898 5.492 1.583 4.100 79.369 8 4.000 4.877 4.542 1.583 3.400 79.600 94.280 5.100 4.369 1.710 3.535 77.840 10 4.200 5.400 4.663 1.590 3.26174.640 11 4.200 5.084 4.386 1.680 3.261 74.380 12 4.401 5.300 4.1421.690 3.728 79.310 13 4.544 5.500 4.423 1.672 3.728 77.539 14 4.5375.500 4.270 1.569 3.728 77.565 15 4.904 6.000 4.728 1.690 4.128 78.90216 4.485 5.118 4.181 2.039 3.528 75.705 17 4.100 5.078 4.395 1.667 3.52880.082 18 4.447 5.144 4.894 2.072 3.528 75.627 19 4.400 5.200 1.8083.261 72.552 20 3.994 5.125 4.484 1.572 3.261 77.383 21 4.300 5.2404.320 1.610 3.528 77.300 22 4.880 5.850 4.949 1.750 3.928 77.650 234.005 4.940 3.889 1.580 3.226 76.500 24 4.588 5.617 4.489 1.687 3.72876.901 25 4.592 5.478 4.515 1.793 3.728 76.896 26 4.316 5.250 4.3931.691 3.728 80.429 27 4.302 5.240 4.368 1.955 3.728 80.465 28 4.9665.993 5.127 2.365 4.128 78.448 29 4.667 5.797 4.893 1.845 4.128 81.802

Table 60 below shows in mm a focal length f1 of the first lens, a focallength f2 of the second lens, a focal length f3 of the third lens, afocal length f4 of the fourth lens, a focal length f5 of the fifth lens,a focal length f6 of the sixth lens, and a focal length f7 of theseventh lens for each of Examples 1-29 described herein.

TABLE 60 Example f1 f2 f3 f4 f5 f6 f7 1 4.057 −11.047 44.073 −31.550−17.744 2.228 −2.041 2 4.153 −10.514 28.261 −94.905 −11.399 2.479 −2.2493 8.932 4.711 −6.777 19892528.4 77.074 −24.683 130.031 4 9.060 4.692−7.025 −4861.622 80.126 −24.191 1985.391 5 8.409 4.355 −6.520 −4512.29274.369 −22.452 1842.731 6 −64.233 3.248 −7.428 −43.722 52.425 3.010−2.424 7 −46.596 3.508 −8.211 −52.702 71.136 3.182 −2.550 8 −38.4702.897 −6.779 −43.510 58.729 2.627 −2.105 9 3.596 −7.349 −1245.24 15.657−19.723 2.662 −2.171 10 3.663 −8.220 −63.703 14.514 −18.059 1.769 −1.52211 3.561 −7.379 −263.403 16.328 −22.391 2.448 −2.021 12 9.952 4.985−9.042 −60.959 28.461 −19.130 −36.205 13 13.419 5.627 −8.921 16.142−36.758 29.873 −12.281 14 17.012 4.996 −9.034 25.753 24.302 −79.899−10.773 15 18.920 5.318 −9.395 26.032 18.807 −15.873 −20.906 16 3.552−7.067 10.578 1000.000 −23.269 1000.000 −8.582 17 4.020 −8.716 26.10832.282 −395.467 3.389 −2.399 18 3.626 −6.978 10.551 125.381 −28.155−367.720 −9.031 19 4.290 −10.606 30.978 14.871 −21.133 3.784 −2.465 205.677 −73.551 −122.716 15.510 207.375 3.799 −2.466 21 3.850 −10.370−54.950 10.920 −17.450 −800.000 −18.250 22 4.310 −10.500 −378.000 14.670−27.270 −800.290 −16.650 23 5.018 11.636 −8.168 −18.768 18.132 2.601−2.226 24 14.270 5.487 −9.006 21.072 −18.204 43.002 92.362 25 3.971−11.857 −77.132 19.846 −30.042 −18.041 68.790 26 4.207 −10.331 27.631107.648 4.166 7.509 −2.062 27 3.620 −10.428 39.821 −38.762 4.342 10.303−2.323 28 3.802 −8.955 64.595 12384.769 −17.503 299.093 57.797 29 4.499−15.674 39.058 453.779 −18.160 102.612 59.134

Table 61 below shows in mm a thickness (L1edgeT) of an edge of the firstlens, a thickness (L2edgeT) of the edge of the second lens, a thickness(L3edgeT) of the edge of the third lens, a thickness (L4edgeT) of theedge of the fourth lens, a thickness (L5edgeT) of the edge of the fifthlens, a thickness (L6edgeT) of the edge of the sixth lens, and athickness (L7edgeT) of the edge of the seventh lens for each of Examples1-29 described herein.

TABLE 61 Example L1edgeT L2edgeT L3edgeT L4edgeT L5edgeT L6edgeT L7edgeT1 0.2261 0.3046 0.2322 0.2803 0.2612 0.2245 0.6182 2 0.2481 0.31370.2323 0.2894 0.2593 0.2451 0.6517 3 0.2315 0.2623 0.3336 0.1934 0.26990.2877 0.2975 4 0.2512 0.2788 0.3703 0.2108 0.2935 0.3430 0.3409 50.2507 0.2797 0.3593 0.2185 0.2930 0.3556 0.3637 6 0.2200 0.2700 0.34800.2240 0.2590 0.2690 0.4370 7 0.2344 0.3011 0.3949 0.2542 0.2880 0.26740.4630 8 0.1933 0.2486 0.3260 0.2096 0.2383 0.2223 0.3832 9 0.22160.3773 0.2347 0.2401 0.1894 0.2600 0.3234 10 0.1667 0.3301 0.1771 0.37980.4552 0.2615 0.8402 11 0.1890 0.3659 0.2631 0.3002 0.1921 0.2609 0.368712 0.2568 0.2552 0.3401 0.2756 0.3650 0.3065 0.2776 13 0.2497 0.25000.4399 0.2704 0.3183 0.6519 0.2941 14 0.2582 0.2578 0.4040 0.2530 0.41070.2818 0.4636 15 0.3048 0.3134 0.3843 0.3204 0.5597 0.3103 0.6858 160.2646 0.2941 0.2300 0.2434 0.4111 0.5608 0.2207 17 0.2240 0.4062 0.22060.2750 0.2232 0.4286 0.4392 18 0.2688 0.3078 0.1901 0.2300 0.4099 0.71390.3000 19 0.2048 0.4069 0.2010 0.3332 0.2778 0.3483 0.8151 20 0.21800.3468 0.2110 0.2593 0.2768 0.2512 0.9497 21 0.1600 0.2400 0.2200 0.15000.2800 0.6000 0.8200 22 0.1100 0.3400 0.1400 0.5500 0.2300 0.5300 0.800023 0.2320 0.2180 0.3500 0.2220 0.2410 0.3730 0.3970 24 0.2502 0.34210.3843 0.4086 0.2945 0.7273 0.2827 25 0.2499 0.2747 0.2768 0.2502 0.33660.4792 0.7821 26 0.2501 0.3506 0.2323 0.3110 0.3641 0.3267 0.3719 270.2520 0.2935 0.2377 0.3745 0.2580 0.4152 0.6857 28 0.2927 0.2979 0.25160.2513 0.4092 0.7155 0.6778 29 0.2463 0.2800 0.2542 0.2728 0.3562 0.63000.6917

Table 62 below shows in mm a sag value (L5S1 sag) of the object-sidesurface of the fifth lens, a sag value (L5S2 sag) of the image-sidesurface of the fifth lens, a thickness (Yc71P1) of the seventh lens at afirst inflection point on the object-side surface of the seventh lens, athickness (Yc71P2) of the seventh lens at a second inflection point onthe object-side surface of the seventh lens, a thickness (Yc72P1) of theseventh lens at a first inflection point on the image-side surface ofthe seventh lens, and a thickness (Yc72P2) of the seventh lens at asecond inflection point on the image-side surface of the seventh lensfor each of Examples 1-29 described herein.

TABLE 62 Example L5S1 sag L5S2 sag Yc71P1 Yc71P2 Yc72P1 Yc72P2 1 −0.315−0.357 1.0890 — 0.9010 — 2 −0.387 −0.422 1.0800 — 0.8010 — 3 0.201 0.2350.5540 0.6550 0.9000 — 4 0.120 0.146 0.6000 0.7030 0.7020 — 5 0.1530.181 0.6100 0.7120 0.7190 — 6 0.115 0.139 0.9300 — 0.8110 — 7 0.1480.156 1.0370 — 0.9200 — 8 0.107 0.117 0.8550 — 0.7520 — 9 −0.466 −0.5262.9330 — 4.1420 — 10 −0.480 −0.548 3.1780 — 4.4010 — 11 −0.473 −0.5422.9730 — 4.1760 — 12 0.210 0.245 0.5690 0.6410 0.6700 — 13 0.185 0.2670.5270 0.4850 0.6470 — 14 0.150 0.089 0.5070 0.7380 0.6370 — 15 0.1390.060 0.6360 0.9480 0.8120 — 16 −0.300 −0.269 0.5710 0.2830 0.6950 — 17−0.475 −0.489 0.9050 — 1.0990 — 18 −0.261 −0.263 0.4730 — 0.6310 — 19−0.485 −0.407 0.8900 — 0.9200 — 20 −0.479 −0.422 — — 0.7810 — 21 −0.420−0.430 0.7900 — 1.2600 — 22 −0.470 −0.460 0.9200 2.9200 1.5400 — 23−0.341 −0.540 0.8247 — 0.7357 — 24 0.221 0.318 0.5700 0.4520 0.6330 — 250.270 0.286 0.8890 — 1.0150 — 26 0.495 0.733 — — 0.7340 — 27 0.276 0.509— — 0.9680 — 28 0.092 0.103 0.9550 1.1030 1.1280 — 29 0.179 0.173 0.96401.1140 1.1300 —

Table 63 below shows in mm an inner diameter of each of the first toseventh spacers for each of Examples 1-29 described herein. S1d is aninner diameter of the first spacer SP1, S2d is an inner diameter of thesecond spacer SP2, S3d is an inner diameter of the third spacer SP3, S4dis an inner diameter of the fourth spacer SP4, S5d is an inner diameterof the fifth spacer SP5, S6d is an inner diameter of the sixth spacerSP6, and S7d is an inner diameter of the seventh spacer SP7.

TABLE 63 Example S1d S2d S3d S4d S5d S6d S7d 1 2.5200 2.2000 2.47002.9300 3.6400 5.3300 — 2 2.5000 2.2200 2.5100 2.9300 3.6200 5.2700 — 31.3300 1.2600 0.9600 1.4400 1.9400 2.6000 — 4 1.0300 1.2500 1.33001.5500 1.9700 2.7200 — 5 1.3300 1.2200 1.2000 1.5800 2.0500 2.6900 — 61.3400 1.2300 1.0300 1.5000 1.9800 2.6600 — 7 1.4900 1.3900 1.16001.5700 2.2200 3.0100 — 8 1.2600 1.1800 0.9400 1.4100 1.8500 2.4600 — 92.3100 2.1600 2.5400 2.9400 4.0600 4.8400 5.1200 10 2.4800 2.2400 2.45002.8500 3.6300 4.2300 4.6300 11 2.3700 2.2000 2.5400 2.8000 3.8500 4.5300— 12 2.5800 2.4000 2.4900 2.9700 4.1600 4.8900 5.5100 13 2.6500 2.46002.3900 2.9000 3.8000 5.1500 — 14 2.8100 2.6300 2.6500 3.1200 4.03004.9100 — 15 2.8100 2.6100 2.7600 3.5400 3.4900 4.4800 5.5600 16 2.06002.0066 2.0518 2.1700 2.8294 5.1896 — 17 2.2800 2.2660 2.5420 3.06203.7780 5.3880 — 18 2.1200 2.1000 2.0400 2.1200 2.8100 4.6400 — 19 2.32002.3600 2.5600 2.9300 3.7000 4.3500 — 20 2.4100 2.3000 2.6600 3.03003.7600 — — 21 2.5400 2.0700 2.2500 2.7300 3.4300 4.7600 — 22 2.60002.2200 2.3300 3.4000 4.0600 5.7800 — 23 2.4200 2.2300 2.0900 2.47003.2000 4.3300 — 24 2.6700 2.5000 2.4400 2.9900 3.8000 5.2700 — 25 2.39002.0900 2.2400 2.6500 3.6200 4.7800 5.0800 26 2.3300 2.2700 2.5300 3.17004.5200 5.3100 5.6400 27 2.0600 1.8900 2.1500 2.7000 3.6100 4.5600 4.840028 1.8900 1.8400 2.3300 2.7300 3.7300 5.4300 6.0300 29 2.3900 2.15002.4000 2.8200 3.9400 5.6800 6.0200

Table 64 below shows in mm³ a volume of each of the first to seventhlenses for each of Examples 1-29 described herein. L1v is a volume ofthe first lens, L2v is a volume of the second lens, L3v is a volume ofthe third lens, L4v is a volume of the fourth lens, L5v is a volume ofthe fifth lens, L6v is a volume of the sixth lens, and L7v is a volumeof the seventh lens.

TABLE 64 Example L1v L2v L3v L4v L5v L6v L7v 1 6.1771 4.5153 5.24185.8649 8.7918 11.0804 30.7452 2 6.8768 4.5411 5.8181 7.3058 9.301111.5552 30.6758 3 4.9183 5.6902 6.3612 5.0504 8.1470 10.2679 16.4786 45.8603 6.3021 6.9428 5.2341 8.7815 12.6345 19.5310 5 7.0682 7.91218.1876 6.5500 7.9904 12.9994 20.4874 6 5.7249 8.0179 8.3774 7.958910.3434 11.1031 27.1511 7 6.6434 9.2110 9.8183 9.3359 12.3271 12.870835.6574 8 4.1150 5.6874 5.8917 5.7534 5.8804 7.1804 20.6852 9 5.23425.0595 5.1455 4.1402 5.9856 8.1378 19.6812 10 4.6744 3.8900 3.39277.1987 10.8334 7.7991 27.5125 11 4.9948 4.9046 5.5099 5.7792 5.54646.8781 20.2909 12 5.6390 4.8580 6.6748 7.1627 11.0369 11.9357 27.1217 135.1650 5.3015 6.2461 7.0472 12.2503 19.1335 17.9152 14 6.0930 6.37986.8569 7.4035 9.7509 11.7344 23.4758 15 6.6748 6.8642 6.8777 7.251919.6689 17.9721 36.9665 16 4.0401 4.0246 4.2696 5.6315 10.9386 25.393915.0485 17 4.4216 5.1184 5.7758 6.6016 7.4237 23.2413 23.4858 18 3.81154.6714 4.0552 5.0631 11.2844 25.7618 16.5646 19 4.2347 5.5368 5.59317.5471 9.4202 8.9992 27.3258 20 4.6529 4.6572 6.2312 6.7131 10.267311.7401 33.5372 21 5.3453 4.8501 6.6014 7.5548 9.1229 28.4121 35.9231 225.0785 6.6058 4.3125 19.2075 9.2578 28.9974 38.7541 23 4.3198 3.69564.1821 5.1874 8.1714 10.5471 19.1646 24 5.0360 6.7314 5.9764 9.372810.4859 21.6926 17.1978 25 5.1465 4.5089 4.4695 4.8122 8.9386 18.211735.9358 26 5.5446 5.0525 4.5199 5.6552 9.8279 14.9067 22.4415 27 3.81003.9751 3.9272 6.1885 7.5160 13.0347 31.8586 28 4.7517 4.3655 6.45625.0723 9.8674 36.8705 47.4701 29 5.6273 4.9490 5.1423 5.0791 9.362431.5832 47.9081

Table 65 below shows in mg a weight of each of the first to seventhlenses for each of Examples 1-29 described herein. L1w is a weight ofthe first lens, L2w is a weight of the second lens, L3w is a weight ofthe third lens, L4w is a weight of the fourth lens, L5w is a weight ofthe fifth lens, L6w is a weight of the sixth lens, and L7w is a weightof the seventh lens.

TABLE 65 Example L1w L2w L3w L4w L5w L6w L7w 1 6.4242 5.5538 5.45157.2138 10.9898 11.5236 31.9750 2 7.1519 5.5856 6.0508 8.9861 11.626412.0174 31.9028 3 5.1150 5.9178 7.9515 6.3130 8.4729 12.8349 16.6434 46.0947 6.5542 8.6785 6.5426 9.1328 15.7931 19.7263 5 7.3509 8.228610.2345 8.1875 8.3100 16.2493 20.6923 6 5.9539 8.3386 10.4718 9.709912.6189 11.5472 28.2371 7 6.9091 9.5794 12.2729 11.3898 15.0391 13.385637.0837 8 4.2796 5.9149 7.3646 7.0191 7.1741 7.4676 21.5126 9 5.44366.2232 5.3513 4.3058 7.3623 8.4633 20.4684 10 4.8614 4.7847 3.52847.4866 13.3251 8.1111 28.6130 11 5.1946 6.0327 5.7303 6.0104 6.82217.1532 21.1025 12 5.8646 5.0523 8.3435 8.9534 11.4784 14.9196 27.3929 135.3716 5.5136 7.8076 7.3291 15.3129 19.8988 18.6318 14 6.3367 6.63508.5711 7.6996 10.1409 14.6680 24.4148 15 6.9418 7.1388 8.5971 7.542020.4557 22.4651 38.4452 16 4.2017 4.9503 5.2516 5.8568 13.5639 31.488415.1990 17 4.5985 6.2956 7.1042 6.8657 9.2054 28.8192 23.7207 18 3.96405.7458 4.2174 5.2656 14.1055 26.7923 17.2272 19 4.4041 6.8103 5.81687.8490 11.5868 9.3592 28.4188 20 4.8390 5.7284 6.4804 6.9816 12.628812.2097 34.8787 21 5.5591 5.9656 8.1197 7.8570 11.4036 35.5151 36.282322 5.2816 8.1251 5.3044 19.9758 11.5723 36.2468 39.1416 23 4.4926 3.84345.1440 5.3949 10.2143 10.9690 19.9312 24 5.2374 7.0007 7.4705 9.747713.1074 22.5603 17.8857 25 5.3524 5.5459 5.4975 5.0047 11.1733 22.764636.2952 26 5.7664 6.3156 4.7007 7.0690 10.2210 15.5030 23.3392 27 3.96244.8894 4.0843 7.6119 7.8166 13.5561 33.1329 28 4.9418 5.3696 6.71445.2752 12.3343 38.3453 47.9448 29 5.8524 6.0873 5.3480 5.2823 11.515832.8465 48.3872

Table 66 below shows in mm an overall outer diameter (including a rib)of each of the first to seventh lenses for each of Examples 1-29described herein. L1TR is an overall outer diameter of the first lens,L2TR is an overall outer diameter of the second lens, L3TR is an overallouter diameter of the third lens, L4TR is an overall outer diameter ofthe fourth lens, L5TR is an overall outer diameter of the fifth lens,L6TR is an overall outer diameter of the sixth lens, and L7TR is anoverall outer diameter of the seventh lens.

TABLE 66 Example L1TR L2TR L3TR L4TR L5TR L6TR L7TR 1 4.2200 4.42004.7200 5.5200 6.2400 6.6400 6.8400 2 4.3600 4.5600 4.8600 5.5600 6.18006.5800 6.7800 3 3.1300 3.0000 2.7500 2.4900 2.3700 2.2300 2.1500 42.1500 2.2500 2.3800 2.5100 2.7500 3.1200 3.2500 5 2.2800 2.4000 2.53002.6300 2.7800 3.1500 3.2500 6 2.4600 2.5800 2.6900 2.8000 3.1700 3.31003.4700 7 2.3700 2.5100 2.7300 2.8900 3.2100 3.4400 3.6500 8 2.06002.1900 2.3000 2.3600 2.5200 2.8300 3.0800 9 4.2200 4.4200 4.5400 4.72005.4000 5.7400 6.3000 10 3.9900 4.1500 4.3500 4.5800 5.1000 5.5600 6.180011 4.2100 4.4100 4.5400 4.8000 4.9700 5.6000 5.9900 12 4.2100 4.30004.4400 4.8400 5.4700 6.1200 6.9000 13 4.1900 4.2800 4.4100 4.8100 5.51006.1600 6.5200 14 4.4300 4.5200 4.6600 5.0600 5.5000 6.2600 6.5700 154.4800 4.5700 4.7000 5.0300 6.6600 7.1900 7.4300 16 3.9810 4.2374 4.52025.1810 5.9018 6.3010 6.5010 17 4.0740 4.2560 4.8340 5.4220 6.0680 6.59606.7860 18 3.5100 3.8100 4.3900 4.9800 5.8500 6.1500 6.2500 19 3.93004.1300 4.7100 6.1700 5.3000 6.5700 6.6700 20 4.0300 4.2300 4.8100 5.40006.2700 6.6700 6.7700 21 4.3200 4.5100 5.0900 5.6800 6.5600 6.9600 7.160022 4.4500 4.6500 5.2200 5.8100 6.6900 7.0900 7.2900 23 3.9300 4.13004.3300 4.9300 5.4200 5.8200 6.0200 24 4.2500 4.3400 4.4800 4.8800 5.51006.3300 6.7000 25 4.1000 4.1900 4.3200 4.7200 5.3500 6.1700 7.0300 264.1100 4.2000 4.3400 4.6120 5.5500 6.3500 7.2100 27 3.7300 3.8200 3.96004.3900 4.9600 6.0000 6.8600 28 3.9700 4.0600 4.1900 4.6300 5.2000 7.15008.0200 29 4.3900 4.4800 4.6100 5.0400 5.6100 7.0900 7.9500

Table 67 below shows in mm a thickness of a flat portion of the rib ofeach of the first to seventh lenses for each of Examples 1-29 describedherein. L1rt is a thickness of a flat portion of the rib of the firstlens, L2rt is a thickness of a flat portion of the rib of the secondlens, L3rt is a thickness of a flat portion of the rib of the thirdlens, L4rt is a thickness of a flat portion of the rib of the fourthlens, L5rt is a thickness of a flat portion of the rib of the fifthlens, L6rt is a thickness of a flat portion of the rib of the sixthlens, and L7rt is a thickness of a flat portion of the rib of theseventh lens.

TABLE 67 Example L1rt L2rt L3rt L4rt L5rt L6rt L7rt 1 0.4850 0.37500.3100 0.2100 0.2950 0.3350 0.6850 2 0.5350 0.3550 0.3300 0.2300 0.32500.3900 0.7000 3 0.5100 0.4600 0.4800 0.2700 0.4000 0.3200 0.3600 40.5900 0.4800 0.5000 0.3000 0.4700 0.3900 0.3600 5 0.6000 0.5400 0.54000.4400 0.2500 0.3800 0.4200 6 0.3900 0.4400 0.4700 0.3600 0.4200 0.38000.4700 7 0.6000 0.5100 0.5500 0.4200 0.4900 0.3400 0.5400 8 0.51000.4400 0.4600 0.4100 0.3100 0.2900 0.4500 9 0.4350 0.4300 0.3600 0.21500.3200 0.3300 0.4050 10 0.3800 0.2800 0.2100 0.4600 0.5200 0.3900 0.880011 0.4200 0.4200 0.3800 0.4000 0.2900 0.3300 0.5400 12 0.5500 0.38000.5800 0.4100 0.5000 0.3200 0.5300 13 0.5200 0.4200 0.5200 0.4100 0.61000.7000 0.3700 14 0.5600 0.4300 0.5600 0.5100 0.4000 0.3500 0.5500 150.5800 0.4600 0.5500 0.3300 0.6000 0.4800 0.7300 16 0.3720 0.4304 0.22920.2843 0.4170 0.6831 0.2615 17 0.4060 0.4930 0.3760 0.2810 0.3160 0.50100.4550 18 0.4820 0.3950 0.3160 0.3280 0.4220 0.8850 0.4090 19 0.43100.5560 0.3610 0.4290 0.3800 0.3800 0.6670 20 0.4310 0.4570 0.3610 0.36400.3800 0.3340 0.7290 21 0.4310 0.4080 0.2790 0.3690 0.2520 0.6740 0.798022 0.4310 0.4930 0.2550 0.8210 0.2520 0.6750 0.8860 23 0.4400 0.33000.3000 0.2600 0.4250 0.5000 0.5180 24 0.4800 0.4900 0.4800 0.5000 0.47000.8300 0.3200 25 0.4600 0.4000 0.3900 0.2600 0.4300 0.5400 0.8300 260.5100 0.4500 0.3400 0.4300 0.4100 0.4100 0.4200 27 0.4000 0.4200 0.37000.5000 0.3200 0.4600 0.7200 28 0.4700 0.4100 0.4500 0.4100 0.4700 0.93000.7000 29 0.4400 0.3900 0.4000 0.4000 0.3800 0.7400 0.7200

Table 68 below shows, for each of Examples 1-29 described herein,dimensionless values of each of the ratio L1w/L7w in ConditionalExpressions 1 and 6, the ratio S6d/f in Conditional Expressions 2 and 7,the ratio L1TR/L7TR in Conditional Expressions 3 and 8, the ratioL1234TRavg/L7TR in Conditional Expressions 4 and 9, and the ratioL12345TRavg/L7TR in Conditional Expressions 5 and 10. The dimensionlessvalue of each of these ratios is obtained by dividing two valuesexpressed in a same unit of measurement.

TABLE 68 Exam- L1w/ L1TR/ L1234TRavg/ L12345TRavg/ ple L7w S6d/f L7TRL7TR L7TR  1 0.2009 1.2352 0.6170 0.6901 0.7345  2 0.2242 1.2115 0.64310.7131 0.7528  3 0.3073 0.6549 1.4558 1.3221 1.2781  4 0.3090 0.63920.6615 0.7146 0.7409  5 0.3552 0.6320 0.7015 0.7569 0.7766  6 0.21090.6115 0.7089 0.7586 0.7896  7 0.1863 0.6213 0.6493 0.7192 0.7512  80.1989 0.6150 0.6688 0.7232 0.7422  9 0.2660 1.1308 0.6698 0.7103 0.739710 0.1699 1.0071 0.6456 0.6905 0.7175 11 0.2462 1.0786 0.7028 0.74960.7656 12 0.2141 1.1111 0.6101 0.6446 0.6742 13 0.2883 1.1334 0.64260.6783 0.7117 14 0.2595 1.0822 0.6743 0.7104 0.7358 15 0.1806 0.91350.6030 0.6319 0.6848 16 0.2764 1.1571 0.6124 0.6891 0.7329 17 0.19391.3141 0.6004 0.6847 0.7266 18 0.2301 1.0434 0.5616 0.6676 0.7213 190.1550 0.9886 0.5892 0.7099 0.7268 20 0.1387 0.5953 0.6821 0.7309 210.1532 1.1070 0.6034 0.6844 0.7307 22 0.1349 1.1844 0.6104 0.6903 0.735823 0.2254 1.0811 0.6528 0.7193 0.7555 24 0.2928 1.1486 0.6343 0.66980.7003 25 0.1475 1.0409 0.5832 0.6163 0.6452 26 0.2471 1.2303 0.57000.5985 0.6328 27 0.1196 1.0600 0.5437 0.5794 0.6082 28 0.1031 1.09340.4950 0.5252 0.5499 29 0.1209 1.2171 0.5522 0.5824 0.6070

FIGS. 59 and 60 are cross-sectional views illustrating examples of anoptical imaging system and a lens barrel coupled to each other.

The examples of an optical imaging system 100 described in thisapplication may include a self-alignment structure as illustrated inFIGS. 59 and 60 .

In one example illustrated in FIG. 59 , the optical imaging system 100includes a self-alignment structure in which optical axes of fourconsecutive lenses 1000, 2000, 3000, and 4000 are aligned with anoptical axis of the optical imaging system 100 by coupling the fourlenses 1000, 2000, 3000, and 4000 to one another.

The first lens 1000 disposed closest to an object side of the opticalimaging system 100 is disposed in contact with an inner surface of alens barrel 200 to align the optical axis of the first lens 1000 withthe optical axis of the optical imaging system 100, the second lens 2000is coupled to the first lens 1000 to align the optical axis of thesecond lens 2000 with the optical axis of the optical imaging system100, the third lens 3000 is coupled to the second lens 2000 to align theoptical axis of the third lens 3000 with the optical axis of the opticalimaging system 100, and the fourth lens 4000 is coupled to the thirdlens 3000 to align the optical axis of the fourth lens 4000 with theoptical axis of the optical imaging system 100. The second lens 2000 tothe fourth lens 4000 may not be disposed in contact with the innersurface of the lens barrel 200.

Although FIG. 59 illustrates that the first lens 1000 to the fourth lens4000 are coupled to one another, the four consecutive lenses that arecoupled to one another may be changed to the second lens 2000 to a fifthlens 5000, the third lens 3000 to a sixth lens 6000, or the fourth lens4000 to a seventh lens 7000.

In another example illustrated in FIG. 60 , the optical imaging system100 includes a self-alignment structure in which optical axes of fiveconsecutive lenses 1000, 2000, 3000, 4000, and 5000 are aligned with anoptical axis of the optical imaging system 100 by coupling the fivelenses 1000, 2000, 3000, 4000, and 5000 to one another.

The first lens 1000 disposed closest to an object side of the opticalimaging system 100 is disposed in contact with an inner surface of thelens barrel 200 to align an optical axis of the first lens 1000 with theoptical axis of the optical imaging system 100, the second lens 2000 iscoupled to the first lens 1000 to align the optical axis of the secondlens 2000 with the optical axis of the optical imaging system 100, thethird lens 3000 is coupled to the second lens 2000 to align the opticalaxis of the third lens 3000 with the optical axis of the optical imagingsystem 100, the fourth lens 4000 is coupled to the third lens 3000 toalign the optical axis of the fourth lens 4000 with the optical axis ofthe optical imaging system 100, and the fifth lens 5000 is coupled tothe fourth lens 4000 to align the optical axis of the fifth lens 5000with the optical axis of the optical imaging system 100. The second lens2000 to the fifth lens 5000 may not be disposed in contact with theinner surface of the lens barrel 200.

Although FIG. 60 illustrates that the first lens 1000 to the fifth lens5000 are coupled to one another, the five consecutive lenses that arecoupled to one another may be changed to the second lens 2000 to a sixthlens 6000, or the third lens 3000 to a seventh lens 7000.

FIG. 61 is a cross-sectional view illustrating an example of a seventhlens.

FIG. 61 illustrates the overall outer diameter (L7TR) of the seventhlens, the thickness (L7rt) of the flat portion of the rib of the seventhlens, the thickness (L7edgeT) of the edge of the seventh lens, thethickness (Yc71P1) of the seventh lens at the first inflection point onthe object-side surface of the seventh lens, the thickness (Yc71P2) ofthe seventh lens at the second inflection point on the object-sidesurface of the seventh lens, and the thickness (Yc72P1) of the seventhlens at the first inflection point of the image-side surface of theseventh lens. Although not shown in FIG. 61 , the seventh lens may alsohave a second inflection point on the image-side surface of the seventhlens, and a thickness of the seventh lens at this inflection point isYc72P2 as listed in the heading of Table 62.

FIG. 62 is a cross-sectional view illustrating an example of a shape ofa rib of a lens.

The examples of the optical imaging system 100 described in thisapplication may include a structure for preventing a flare phenomenonand reflection.

For example, the ribs of the first to seventh lenses 1000, 2000, 3000,4000, 5000, 6000, and 7000 of the optical imaging system may bepartially surface-treated to make the surface of the rib rough as shownin FIG. 62 . Methods of surface treatment may include chemical etching,physical grinding, or any other surface treatment method capable ofincreasing a roughness of a surface.

A surface-treated area EA may be formed in an entire area from an edgeof the optical portion of the lens through which light actually passesto an outer end of the rib. However, as illustrated in FIG. 62 ,non-treated areas NEA including step portions E11, E21, and E22 may notbe surface-treated, or may be surface-treated to have a roughness lessthan a roughness of the surface-treated area EA. The step portions E11,E21, and E22 are portions where the thickness of the rib abruptlychanges. A width G1 of a first non-treated area NEA formed on anobject-side surface of the lens and including a first step portion E1lmay be different from a width G2 of a second non-treated area NEA formedon an image-side surface of the lens and including a second step portionE21 and a third step portion E22. In the example illustrated in FIG. 62, G1 is greater than G2.

The width G1 of the first non-treated area NEA includes the first stepportion E11, the second step portion E21, and the third step portion E22when viewed in an optical axis direction, and the width G2 of the secondnon-treated area NEA includes the second step portion E21 and the thirdstep portion E22 but not the first step portion E1l when viewed in theoptical axis direction. A distance G4 from the outer end of the rib tothe second step portion E21 is smaller than a distance G3 from the outerend of the rib to the first step portion E11. Also, a distance G5 fromthe outer end of the rib to the third step portion E22 is smaller thanthe distance G3 from the outer end of the rib to the first step portionE11.

The positions at which the non-treated areas NEA and the step portionsE11, E21, and E22 are formed as described above may be advantageous formeasuring a concentricity of the lens.

The examples described above enable the optical imaging system to beminiaturized and aberrations to be easily corrected.

While this disclosure includes specific examples, it will be apparentafter an understanding of the disclosure of this application thatvarious changes in form and details may be made in these exampleswithout departing from the spirit and scope of the claims and theirequivalents. The examples described herein are to be considered in adescriptive sense only, and not for purposes of limitation. Descriptionsof features or aspects in each example are to be considered as beingapplicable to similar features or aspects in other examples. Suitableresults may be achieved if the described techniques are performed in adifferent order, and/or if components in a described system,architecture, device, or circuit are combined in a different manner,and/or replaced or supplemented by other components or theirequivalents. Therefore, the scope of the disclosure is defined not bythe detailed description, but by the claims and their equivalents, andall variations within the scope of the claims and their equivalents areto be construed as being included in the disclosure.

What is claimed is:
 1. An optical imaging system comprising: a firstlens having a concave image-side surface; a second lens having negativerefractive power; a third lens having negative refractive power; afourth lens having positive refractive power and a convex object-sidesurface in a paraxial region; a fifth lens having a concave object-sidesurface and a convex image-side surface in a paraxial region; a sixthlens having convex object-side and image-side surfaces in a paraxialregion; and a seventh lens having a refractive power, wherein the firstto seventh lenses are sequentially disposed in numerical order along anoptical axis of the optical imaging system from an object side of theoptical imaging system toward an imaging plane of the optical imagingsystem, wherein the optical imaging system has a total number of sevenlenses with refractive power, wherein the optical imaging systemsatisfies 0.5<L1234TRavg/L7TR<0.9, where L1234Travg is an average valueof overall outer diameters of the first to fourth lenses, L7TR is anoverall outer diameter of the seventh lens, and L1234Travg and L7TR areexpressed in a same unit of measurement, and wherein the optical imagingsystem satisfies 0.05<R1/R6<0.9, where R1 is a radius of curvature of anobject-side surface of the first lens, and R6 is a radius of curvatureof an image-side surface of the third lens.
 2. The optical imagingsystem of claim 1, wherein an object-side surface of the first lens isconvex.
 3. The optical imaging system of claim 1, wherein an image-sidesurface of the seventh lens is concave.
 4. The optical imaging system ofclaim 1, wherein a distance along the optical axis from an object-sidesurface of the first lens to the imaging plane is 6 mm or less.
 5. Theoptical imaging system of claim 1, wherein at least one inflection pointis formed on either one or both of an object-side surface and animage-side surface of the sixth lens.
 6. The optical imaging system ofclaim 1, wherein at least one inflection point is formed on either oneor both of an object-side surface and an image-side surface of theseventh lens.
 7. The optical imaging system of claim 1, wherein theoptical imaging system further satisfies 0.1<L1w/L7w<0.3, where L1w is aweight of the first lens, L7w is a weight of the seventh lens, and L1wand L7w are expressed in a same unit of measurement.
 8. The opticalimaging system of claim 1, further comprising a spacer disposed betweenthe sixth and seventh lenses, wherein the optical imaging system furthersatisfies 0.5<S6d/f<1.2, where S6d is an inner diameter of the spacer, fis the overall focal length of the optical imaging system, and S6d and fare expressed in a same unit of measurement.
 9. The optical imagingsystem of claim 1, wherein the optical imaging system further satisfies0.4<L1TR/L7TR<0.7, where L1TR is an overall outer diameter of the firstlens, and L1TR and L7TR are expressed in a same unit of measurement. 10.The optical imaging system of claim 1, wherein the optical imagingsystem further satisfies 0.5<L1234TRavg/L7TR<0.75.
 11. The opticalimaging system of claim 1, wherein the optical imaging system furthersatisfies 0.5<L12345TRavg/L7TR<0.76, where L12345TRavg is an averagevalue of overall outer diameters of the first to fifth lenses, andL12345TRavg and L7TR are expressed in a same unit of measurement. 12.The optical imaging system of claim 1, wherein the fifth lens has anegative refractive power.
 13. The optical imaging system of claim 1,wherein a paraxial region of an object-side surface of the seventh lensis concave or convex.